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Parametric study of WEDM of titanium grade 12 using RSM and desirability approach Emerging Mater. Res. (IF 2.2) Pub Date : 2023-12-28 Debal Pramanik, Bikash Panja, Sudip Banerjee
The present experimental study aims to scrutinize the effect of different process parameters on the material removal rate (MRR) and surface roughness (SR) of titanium grade 12 alloy during wire electro-discharge machining (WEDM) using response surface methodology. Four parameters (pulse-on time, pulse-off time, wire feed and gap voltage) and three levels of each selected variable are considered to
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Influencing effects of variant laser pulse energy on fatigue behavior induced by LSP Emerging Mater. Res. (IF 2.2) Pub Date : 2023-12-28 Enoch Asuako Larson, Samuel Adu-Gyamfi, Abankwa Omari Ebenezer, Milku Kwame Augustine, Philip Yamba, Salifu Tahiru Azeko, Denis E K Dzebre
The set objective in this study is to understand the effects of laser shock processing of variant laser pulse energies on residual compressive stress, microhardness, fatigue fracture and fatigue life in the application of aircraft lug material. The effects of three variant laser pulse energies of 3.0, 4.0 and 5.7 J were examined along with laser processing parameters. A Q-switch (neodymium (Nd)-doped
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Chemically reduced silver nanoparticles: preparation and applications Emerging Mater. Res. (IF 2.2) Pub Date : 2023-12-28 Da-Qing Tan, Meng-Yao Dong, Yi-jie Xia, Xuan-Ye Wang, Hui-Ge Wei
By virtue of their unique physiochemical properties, silver nanoparticles (AgNPs) have attracted enormous research interest for versatile applications. It is critical to study the effect of the microstructure – for example, the shape and the size of AgNPs – on their performance. Herein, AgNPs with varying shapes and sizes were synthesized by varying the manner that the reducing agent sodium borohydride
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Impact of solution chemistry on morphology of enzyme-induced calcium carbonate precipitate Emerging Mater. Res. (IF 2.2) Pub Date : 2023-11-07 Aishwarya Thirumalairaju, Ashish Juneja
Enzyme-induced calcium carbonate precipitation (EICP) through the urea hydrolysis pathway has been widely studied for various applications. The EICP solution comprises urea, a calcium source (usually calcium chloride) and the enzyme urease. This study addressed the effect of the chemical concentration of the EICP solution on the morphology of the calcium carbonate product. This was achieved by varying
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Role of bond coat deposition method in the hot corrosion behavior of CSZ thermal barrier coatings Emerging Mater. Res. (IF 2.2) Pub Date : 2023-11-07 Babak Mousavi, Mohammad Farvizi, Ali Shamsipoor, Mohammad Reza Rahimipour, Ahmad Keyvani
In this research, a NiCrAlY bond coat was applied using two methods – namely, conventional air plasma spraying (APS) and new spark plasma sintering (SPS) technique – on an Inconel-738 substrate. The ceria-stabilized zirconia (CSZ) topcoat was similar in both samples and deposited using the APS method. The hot corrosion performance of the fabricated thermal barrier coatings (TBCs) was studied at 950°C
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Pretreatment impact on electrochemically synthesized graphene oxide Emerging Mater. Res. (IF 2.2) Pub Date : 2023-11-07 Tamer Güzel
The production of graphene oxide by the electrochemical method is more environmentally friendly, faster and suitable for mass production than the chemical method. Although this technique is very practical, the correct parameters must be selected to produce graphene oxide. Therefore, it is very important to investigate the factors affecting graphene oxide synthesis in the electrochemical process. In
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Engineering performance of lightweight geomaterial influenced by EPS density and mix ratio Emerging Mater. Res. (IF 2.2) Pub Date : 2023-11-02 Anupam Yogendra Pande, Amit Harihar Padade
This paper highlights the engineering behavior of an expanded-polystyrene (EPS)-bead-based fly ash geomaterial (FAGM). The proposed geomaterial was prepared by blending EPS beads of different densities and fly ash contents with cement as a binding agent. The effects of three different EPS bead densities (25, 30 and 35 kg/m3), four EPS mix ratios (0.5–2.0%) and two cement contents (15 and 20%) on density
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Role of bond coat deposition method on the hot corrosion behavior of CSZ thermal barrier coatings Emerging Mater. Res. (IF 2.2) Pub Date : 2023-10-16 B Mousavi, M Farvizi, A Shamsipoor, M R Rahimipour, A Keyvani
In this research, NiCrAlY bond coat was applied with two methods, including conventional air plasma spraying (APS) and new spark plasma sintering (SPS) techniques on Inconel-738 substrate. Ceria stabilized zirconia (CSZ) top coat was similar in both samples and deposited with APS method. The hot corrosion performance of fabricated thermal barrier coatings (TBCs) was studied at 950°C in Na2SO4-55 wt
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A risk-based decision making framework to analyze the properties of cobalt–chromium alloys Emerging Mater. Res. (IF 2.2) Pub Date : 2023-10-13 Hilal Singer, Tijen Över Özçelik
In this study, the properties of cobalt–chromium alloys are systematically prioritized to aid in the minimization of orthopedic implant failures and risks in biomedical applications. Within the model, six main groups (including a total of 31 properties) are defined: economic aspects, design and production properties, mechanical properties, physical properties, chemical properties and biological properties
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Deterioration law and mechanism of autoclaved aerated concrete under sulfate attack Emerging Mater. Res. (IF 2.2) Pub Date : 2023-10-13 Haoran Wang, Rongsheng Xu, Lu Wei, Jian Lin, Dongping Wu
Autoclaved aerated concrete (AAC) is a lightweight porous material, which is widely used as wall material. However, the performance of AAC under sulfate attack is still unclear. Therefore, this experiment investigated the performance changes of AAC with different bulk densities in sodium sulfate solution. Meanwhile, the influence of B05 grade AAC under erosion by sodium sulfate, magnesium sulfate and
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First-principles modeling of molecular adsorption on an InSe monolayer Emerging Mater. Res. (IF 2.2) Pub Date : 2023-10-13 Xue Lei, Anatoly F Zatsepin
In this paper, it is demonstrated that the calculated physical adsorption energies, substrate–adsorbent distances and substrate distortions strongly depend on the size of the employed supercell and particularly on the type of optimization in the case of very flexible two-dimensional monolayers, such as indium (II) selenide (InSe). It has been established that calculations with optimization of only
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Engineering performance of lightweight geomaterial influenced by EPS density and mix ratio Emerging Mater. Res. (IF 2.2) Pub Date : 2023-10-09 Anupam Yogendra Pande, Amit Harihar Padade
This manuscript highlights the engineering behavior of expanded polystyrene beads-based fly ash geomaterial (FAGM). The proposed geomaterial is prepared by blending EPS beads of different densities and contents in fly ash with cement as a binding agent. The effect of three different EPS bead densities (25, 30, and 35 kg/m3), four EPS mix ratios (0.5-2.0%), and two cement contents (15, 20%) on density
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Characterization of 3D-printed graphene-reinforced PLA scaffold for bone regeneration Emerging Mater. Res. (IF 2.2) Pub Date : 2023-10-04 Manoharan Karthic, Kunjan Chockalingam, Chandran Vignesh, K Jawaharlal Nagarajan
In orthopedic application, bone tissue engineering (BTE) is a novel treatment method for bone defects involving bone regeneration using an artificial supporting structure called scaffold. The aim of this work is to fabricate graphene-reinforced poly(lactic acid) (PLA/Gr) scaffolds with different pore shapes (circular, square and hexagonal) and different pore sizes (1000, 1500 and 2000 μm) using the
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Fabrication process optimization of nHA–CNTs-reinforced PEEK hybrid nanocomposite Emerging Mater. Res. (IF 2.2) Pub Date : 2023-09-05 Manjeet Kumar, Rajesh Kumar, Sandeep Kumar
Compression molding is the leading fabrication process for polymer composites. The settings of process parameters highly influence the mechanical properties of composites. This study optimized the ball-mixing and compression-molding process parameters for the fabrication of hybrid nanocomposites based on polyetheretherketone (PEEK), multiwalled carbon nanotubes (MWCNTs) and nano-hydroxyapatite using
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Hydrothermally grown CdS-embedded graphene oxide nanocomposites with enhanced optical properties Emerging Mater. Res. (IF 2.2) Pub Date : 2023-08-17 Jyoti Bala Kaundal, R K Tiwari, Y C Goswami
Nanocomposites based on graphene oxide have shown significant potential in various applications, including solar devices. In this work, hydrothermally synthesised cadmium sulfide-embedded graphene oxide (GO-CdS) nanocomposites have been reported. The resulting powder is black and was filtered and washed with distilled water. The samples were then characterised by X-ray diffraction, FTIR, optical transmission
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Tensile and microstructural behavior of gas-tungsten-arc-welded electrolytic tough pitch copper joints Emerging Mater. Res. (IF 2.2) Pub Date : 2023-08-15 Veeraswamy Amarnath, Palaniswamy Karuppuswamy, Chinnasamy Rajendran
Electrolytic tough pitch (ETP) copper is extensively used in the manufacturing of electrical machines and automobiles. Compared with other pure coppers, ETP copper has lower weldability. Therefore, this study analyzes the weldability of ETP copper using the gas tungsten arc welding (GTAW) process. GTAW can be performed using constant-current (CC) and pulsed-current (PC) modes. Consequently, the properties
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Iron-material-facilitated methane production from anaerobic wastewater treatment Emerging Mater. Res. (IF 2.2) Pub Date : 2023-08-08 Ying Wang, Jichun He, Ben Bin Xu, Nahid A Osman, Hassan Algadi, Hala M Abo-Dief, Na Lu, Priyanka Wasnik, Deepak Sridhar, Abdullah K Alanazi, Qinglong Jiang, Bin Qiu, Zhanhu Guo
Various iron materials have been used to improve the methane production rate in anaerobic sludge. The effects of iron materials, including zerovalent iron (ZVI), magnetite (iron (II,III) oxide (Fe3O4)) and iron (III) oxide (Fe2O3), on the methane production rate were compared. It was found that all the iron materials could improve the methane production rate, and ZVI, iron (II,III) oxide and iron (III)
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Effect of extrusion parameters on microstructure and mechanical properties of Mg–6Zn–1Mn–0.2Gd alloy Emerging Mater. Res. (IF 2.2) Pub Date : 2023-08-08 Yang Zhao, Han Li, Xiaoqin Wei, Fangchao Zhao, Dingfei Zhang
The microstructure, dynamic recrystallization behavior and texture evolution of an as-extruded Mg–6Zn–1Mn–0.2Gd (ZMG610) alloy at different extrusion conditions (extrusion ratios of 25 and 45, temperatures of 350 and 400°C) were investigated. The as-cast ZMG610 alloy was mainly composed of the α-magnesium (α-Mg) matrix, the Mg7Zn3 phase and Mg3Zn6Gd (I phase). A large number of I-phase particles remained
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Synthesis and characterization of hybrid ternary Cd1−x Fe x S nanoparticles Emerging Mater. Res. (IF 2.2) Pub Date : 2023-08-04 James Caleb Peters Thomas Rathnakumar Peters, Murali Manoj Ganesan, Aravindkumar Sundaram, Sathish Chander Dhanabalan, Lei Xue, Ramalingam Gopal, Rajesh Kumar Manavalan, Joice Sophia Ponraj
This study details the synthesis of high-quality Cd1−x Fe x S nanoparticles using a simple cost-effective chemical technique in the air atmosphere. The structural analysis revealed the presence of a cubic cadmium sulfide (CdS) lattice with a hexagonal iron (II) sulfide (FeS) phase in Cd1−x Fe x S nanoparticles. X-ray diffraction results showed that the iron (III) chloride (FeCl3) dosage had a significant
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CMT-based wire arc additive manufacturing of Inconel 625 alloy Emerging Mater. Res. (IF 2.2) Pub Date : 2023-07-28 Ji Junwen, Anatoliy Zavdoveev, Dmytro Vedel, Thierry Baudin, Sviatoslav Motrunich, Ilya Klochkov, Sabine Friederichs, Natalia Strelenko, Mykola Skoryk
Cold metal transfer (CMT) technology is considered in an application for wire arc additive manufacturing (WAAM) of refractory highly corrosion-resistant Inconel 625 alloy. Based on the fabricated wall, the suitability of CMT–WAAM for the sound formation of welds and homogeneous distribution of mechanical properties is shown. Microscopic analysis reveals that the microstructure of the deposited alloy
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A novel bionic straw-filled concrete block: compression and heat-transfer performance Emerging Mater. Res. (IF 2.2) Pub Date : 2023-07-17 Elsafi M A Elbashiry, Ning Hao, Jinxiang Chen, Yiheng Song
To develop economical, environmentally friendly and lightweight building materials, a novel straw-filled bionic concrete hollow block (BCHB) was designed. Compression tests were conducted to determine the compressive strength of the BCHB. Furthermore, the compressive and heat-transfer properties of these blocks were investigated with finite-element analysis, and the following results were observed
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Optimizing quantum dot solar cells: exploring defect density effects with PTAA HTL layer simulation using SCAPS-1D Emerging Mater. Res. (IF 2.2) Pub Date : 2023-06-27 Ahmad Umar, Vaishali Yadav, Vaibhava Srivastava, Sadanand, Pooja Lohia, Dilip Kumar Dwivedi, Ahmed A Ibrahim, Sheikh Akbar, Hussam Qasem, Sotirios Baskoutas
In recent years, quantum dot solar cells have attracted attention due to their versatile electrical and optical properties as a material. A quantum dot solar cell can be tuned in terms of bandgap and size. In this work, the effect of defect density on the performance of a solar cell is studied with the help of the Solar Cell Capacitance Simulator in One Dimension (SCAPS-1D) software. The defect densities
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An investigation of corrosion in dehumidification bubble caps in a gas refinery Emerging Mater. Res. (IF 2.2) Pub Date : 2023-06-07 Hurieh Mohammadzadeh, Robabeh Jafari, Abolfazl Gheysvand
One of the severe challenges in the oil, gas and petrochemical industry is associated with reducing the costs of corrosion damages by removing oil fluid moisture and humidity in facilities. An essential component of moisture absorption towers in the dehumidification section is the bubble cap, which loses its efficiency in a short time due to continuous contact with steam. In the present work, the causes
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Effect of Magnetic field on dielectric properties in PLT/BNCFO composites Emerging Mater. Res. (IF 2.2) Pub Date : 2023-05-15 Indu Sharma, Shruti Mahajan, Vishal Arora, Mehak Arora, Nitin Mahajan, Kanika Aggarwal, Anupinder Singh
The main goal of this study is to analyze the magnetic, dielectric, and magneto-dielectric characteristics of Pb1− x La x Ti1− x O 3 - (Ba1–3 x Nd2 x )4Co2Fe36O60 (where x = 0.25) composite material at various temperatures T1-T3 (i.e 1100°C ,1200°C, 1300°C respectively). The X-ray diffraction investigation has been introduced in order to pinpoint the creation of the U-type hexaferrite phase. SEM micrographs
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Modified-ZnO-mediated dye detoxification by a heterogeneous Fenton process Emerging Mater. Res. (IF 2.2) Pub Date : 2023-05-11 Abdulmohsen K D Alsukaibi, Mohd Wajid Ali Khan, Ahmed Al-Otaibi, Asma K Alshamari, Eida Mohammad Alshammari, Lassaad Mechi, Fathi Rabeh Alimi, Shahper Nazeer Khan
The continuous and unchecked discharge of effluents by the dyeing industry into water bodies has led to the rising importance of water treatment. This study focuses on the successful abatement of the auramine O (AM) dye in an aqueous system through a heterogeneous Fenton process using ultrasonication. Zinc oxide (ZnO) nanoparticles (NPs) were obtained by using a straightforward precipitation method
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Characteristics of Abelmoschus esculentus (Indian okra) fiber varieties Emerging Mater. Res. (IF 2.2) Pub Date : 2023-05-09 Prafull P Kolte, Vijay S Shivankar
Okra fiber is the natural cellulosic bast fiber extracted from the bark of the Abelmoschus esculentus plant stem. India is the largest producer of okra for the cultivation of ‘okra fruit’. After the okra plant is harvested in the field, the okra fruit is collected as a vegetable, and the okra plant is thrown out as agricultural waste. In India, an estimated 4.5 Mt of green okra plants is discarded
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Effects of modified argon glow plasma source on PET polymeric surface properties Emerging Mater. Res. (IF 2.2) Pub Date : 2023-05-05 Haifa A Al-Yousef, M R Atta, E Abdeltwab, A Atta, M M Abdel-Hamid
A home-made plasma source with a Langmuir electrical probe was built for this work in order to create a plasma beam that could be utilized successfully in a range of uses. By modifying the operational parameters, including the discharging voltage, cathode-anode spacing, as well as argon (Ar) pressure, a steady discharging media was achieved. Additionally, a locally design electrical probe is introduced
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The effects of Zn doping on the thermoelectric performance of Cu12Sb4S13 Emerging Mater. Res. (IF 2.2) Pub Date : 2023-04-28 Mian Liu, Changsong Liu, Xiaoying Qin
In this study, first-principles electronic structure calculations and Boltzmann transport theories were used to understand the thermoelectric behavior of tetrahedrites. Calculations were performed on zinc (Zn)-substituted derivatives with zinc occupying each lattice site in the parent compound Cu12Sb4S13 to study the zinc substitution mechanism and the relation between the zinc substitution site and
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Development and evaluation of coal mine waste materials for gainful utilization Emerging Mater. Res. (IF 2.2) Pub Date : 2023-04-25 Subhasrita Choudhury, Manoj Kumar Mishra
Coal mine overburden and thick inseam parting materials found in the lower Gondwana basin are treated as mine wastes. Unused fly ash from coal-fired plants is another waste material. This investigation focused on using these wastes to develop better composite materials. Composite materials of varying compositions with coal mine wastes from 50 to 90% and fly ash from 10 to 50% with 2–6% cement additives
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Impact of truncation on absorption spectra in a graphene-based random photonic crystal Emerging Mater. Res. (IF 2.2) Pub Date : 2023-04-25 Pulimi Mahesh, Chittaranjan Nayak, Damodar Panigrahy
The present study investigates the influence of randomness on achieving multimode broadband and narrowband absorption of graphene-embedded photonic structures. In the first proposed photonic configuration, with a change in randomness parameter, it is possible to achieve single-mode and multimode broadband absorption up to 0.8. This value is further enhanced up to 0.99 by varying the Fermi level to
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Effect of a longitudinal magnetic field on arc motion and joint structure of a hollow stud Emerging Mater. Res. (IF 2.2) Pub Date : 2023-04-25 Deku Zhang, Mengyu Duan, Xinkai Zhu, Hongyu Zhang, Chonglin Wu, Kehong Wang
Given the non-uniform melting of the end face of a joint and the local non-fusion of the joint in large-diameter hollow stud welding, to research the law of arc motion, the joint-forming quality, weld microstructure and mechanical properties in the process of hollow stud welding propelled by a longitudinal magnetic field were investigated in this study. The results reveal that under the influence of
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Investigation of the failure mechanism of dissimilar resistance spot welding of steels Emerging Mater. Res. (IF 2.2) Pub Date : 2023-04-26 M Prabhakaran, D Jeyasimman, M Varatharajulu
Austenitic and duplex stainless steels are majorly preferred for heat exchangers and chemical containers. This research work investigated the failure mechanism of dissimilar welded joints of AISI 347 and DSS 2205. The welded specimens were investigated using tensile shear tests, cross-tension tests, coach peel tests and microhardness tests. The specimen absorbed a maximum tensile shear load of 18 kN
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Flake-shaped ZnFe2O4 nanoparticles: synthesis, characterisation and photocatalytic study Emerging Mater. Res. (IF 2.2) Pub Date : 2023-04-26 Jyoti Prakash Dhal, Amit Sahoo, Achyuta Nanda Acharya
Flake-shaped franklinite (ZnFe2O4) nanoparticles were successfully prepared by using the co-precipitation method. The phase and crystallinity of the synthesised franklinite nanoparticles were studied by X-ray diffraction. The scanning electron microscopy results revealed that the flake-shaped entities were formed in combination with rod-shaped nanomaterial. The band gap of the synthesised franklinite
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Modified ZnO mediated dye detoxification by a heterogeneous Fenton process Emerging Mater. Res. (IF 2.2) Pub Date : 2023-04-13 Abdulmohsen K D Alsukaibi, Mohd Wajid Ali Khan, Ahmed Al-Otaibi, Asma K A A Alshamari, Eida Mohammad Alshammari, Lassaad Mechi, Fathi Rabeh Alimi, Shahper Nazeer Khan
The continuous and unchecked discharge of effluents by the dyeing industry in water bodies, have lead to the rising importance of water treatment. This study focusses on the successful abatement of Auramine O (AM) dye in the aqueous system by a heterogeneous Fenton process using ultrasonication. Zinc oxide (ZnO) nanoparticles (NPs) were obtained by a straightforward precipitation method and then modified
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Flake shaped ZnFe2O4 nanoparticles: synthesis, characterization and visible light induced photocatalytic study Emerging Mater. Res. (IF 2.2) Pub Date : 2023-04-11 Jyoti Prakash Dhal, Amit Sahoo, Achyuta Nanda Acharya
Flake shaped ZnFe2O4 nanoparticles have successfully been prepared by co-precipitation method. The phase and crystallinity of the synthesised ZnFe2O4 nanoparticles were studied by XRD. The SEM result reveals that the flake shaped entities are formed by the combination of rod-shaped nanomaterial. The band gap of the synthesised ZnFe2O4 nanoparticles is found to be ∼ 2.14 eV by UV-Vis DRS measurements
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Effect of magnetite on physical, tribological and magnetic characteristics of kenaf fibre Emerging Mater. Res. (IF 2.2) Pub Date : 2023-04-05 Satish Pujari, Sattaru Santosh Kumar, Nambala S Naveen, Chinta Neelima Devi, Siva Rao Subramonian
The demand for organic fibres with remarkable mechanical, magnetic and physical properties is rising. As a result, the current study investigated the impact of magnetite reinforcement on kenaf fibre. The test samples were prepared by using the hand lay-up process with the addition of magnetite in the range 10–40 wt%. The test results showed that samples with a 30% magnetite content had the best mechanical
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Photocatalytic performance of Nd–TiO2 coatings: effect of voltage and frequency Emerging Mater. Res. (IF 2.2) Pub Date : 2023-03-20 Yuanji Shi, Yunzhong Dai, Junwan Li, Cheng Cheng, Jingxiao Li
Neodymium (Nd)–titanium dioxide (TiO2) micro-arc oxidation (MAO) coatings were formed in a phosphate-based electrolyte with the addition of neodymium (III) oxide (Nd2O3) using suitable voltages and frequencies. Scanning electron microscopy results revealed that the coatings varied with different voltages and frequencies. Furthermore, composition analysis showed the neodymium–titanium dioxide coatings
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Research on the influence of clay shock on inert slurry in shield-tunneling construction Emerging Mater. Res. (IF 2.2) Pub Date : 2023-03-07 Yu Wan, He Sun, Zhiduo Zhu, Wangwen Huo, Chen Zhang
Shield-out synchronous grouting is a new technology used to fill temporarily shield-out spaces between the strata and the shield when creating subterraneous tunnels. The grouting materials are called ‘clay shock’, which is soft, plastic, sticky and easily dispersed by using a pressurized jet. This study analyzes the mixing process of clay shock and backfill grouting material (inert slurry) and investigates
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Photoelectrochemical properties of Cu2O/PANI/Si-based photocathodes for CO2 conversion Emerging Mater. Res. (IF 2.2) Pub Date : 2023-02-24 Lamia Talbi, Isma Bozetine, Sabiha Anas Boussaa, Karima Benfadel, Djaouida Allam, Nesrine Rahim, Yasmine Ould Mohamed, Markus Leitgeb, Chaima Torki, Smain Hocine, Fatima Boudeffar, Amar Manseri, Samira Kaci
The present study was aimed at converting carbon dioxide (CO2) into value-added products such as methanol, which can provide not only a potential solution for controlling the carbon dioxide concentration level in the atmosphere but also can offer an alternative approach for the production of renewable energy sources. From this perspective, various hybrid photoelectrocatalysts were synthesized, characterized
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High-performance lead-free-perovskite solar cell: a theoretical study Emerging Mater. Res. (IF 2.2) Pub Date : 2023-02-23 Ahmad Umar, Pranjal Srivastava, Sadanand, Shambhavi Rai, Pooja Lohia, D K Dwivedi, Hassan Algadi, S Baskoutas
In the present work, lead-free perovskite solar cell has been structured using CH3NH3SnI3 as an absorber layer, P3HT acting as a HTL, and TiO2 as ETL material. Perovskite solar cell is the originating photovoltaic technology that shows great elevation in its performance during recent years. The fundamental n-i-p planar heterojunction structure of photovoltaic cells has been designed and simulated with
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Effect and optimization of tribological parameters upon wear responses of TiAlN coating Emerging Mater. Res. (IF 2.2) Pub Date : 2023-02-22 Sunil Kumar, Saikat Ranjan Maity, Lokeswar Patnaik
This study investigated the relative effects of tribological process parameters and their optimization for wear responses of a TiAlN thin film deposited on heat-treated and plasma-nitrided novel MDC-K hot work tool steel. The effects of tribological process parameters were studied by conducting a tribological test on the TiAlN thin film against a tungsten carbide (WC) counterbody. The researchers considered
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Reaction mechanisms of pristine and Cu-doped ZnO clusters with ethanol using Evans–Polanyi principle Emerging Mater. Res. (IF 2.2) Pub Date : 2023-01-27 Mudar Ahmed Abdulsattar, Hayder M Abduljalil, Hussein Hakim Abed
The interaction and adsorption of pristine and Cu-doped ZnO nanoparticles of ethanol (C2H6O) and several other gases are calculated. These gases include carbon dioxide (CO2), carbon monoxide (CO), ammonia (NH3), ozone (O3), nitrogen dioxide (NO2), and sulfur dioxide (SO2). Most of these gases are air pollutants. ZnO wurtzoid clusters are used to represent ZnO nanoparticles. Gibbs free energy and enthalpy
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Microstructure and mechanical properties of SS316L prepared by selective laser melting Emerging Mater. Res. (IF 2.2) Pub Date : 2023-01-23 Di Chen, Ying Li, Qingqing Pan, Ziqi Liu, Qile Shi, Lin Zhang, Jingguang Peng
In this work, 316L stainless steel samples were prepared by selective laser melting (SLM) and the effects of the bulk laser energy density on the resulting density and mechanical properties were evaluated. The results show that the density and mechanical properties of SLM 316L stainless steel first improved and then deteriorated with increasing bulk laser energy density. When the bulk laser energy
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Image-driven deep-learning-enabled automatic microstructural recognition Emerging Mater. Res. (IF 2.2) Pub Date : 2023-01-12 Rishab Nigam, Vedasri Bai Khavala, Khushbu Dash, Nachiketa Mishra
The deep learning (DL) method consisting of a convolutional neural network (CNN) was employed to automate the task of microstructural recognition and classification to identify dendritic characteristics in metallic microstructures. Dendrites are an important feature that decide the mechanical properties of an alloy; further, the dendritic arm spacing is critical in ascertaining the values of strength
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Theoretical study of a lead-free perovskite solar cell using ZnSe as ETL and PTAA as HTL Emerging Mater. Res. (IF 2.2) Pub Date : 2023-01-05 Vaibhava Srivastava, Rajeev Kumar Chauhan, Pooja Lohia
Cesium tin-germanium triiodide (CsSn0.5Ge0.5I3) is an efficient inorganic halide perovskite with good stability that has received wide attention in recent years. In the present study, a lead-free perovskite solar cell structure was designed with zinc selenide (ZnSe) as the electron transport layer (ETL), CsSn0.5Ge0.5I3 as the perovskite absorber layer and poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine]
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Theoretical study of lead-free perovskite solar cell using ZnSe as ETL and PTAA as HTL Emerging Mater. Res. (IF 2.2) Pub Date : 2022-12-21 Vaibhava Srivastava, R K Chauhan, Pooja Lohia
Cesium tin germanium triiodide (CsSn0.5Ge0.5I3) is one of the proficient inorganic halides the perovskites for better stability that has received wide attention in recent years. In the present study, a lead-free perovskite solar cell structure is designed with Zinc selenide as the electron transport layer (ETL), CsSn0.5Ge0.5I3 as the perovskite absorber layer, and PTAA [Poly(bis[4-phenyl]{2,4,6-tr
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Study on microstructure and mechanical properties of RSW joints of 7075T-6 containing Sc Emerging Mater. Res. (IF 2.2) Pub Date : 2022-12-19 Chaofan Ma, Jun Shen, Hao Li, Chengzong Zeng, Fuxing Xie
Currently, resistance spot welding (RSW) is a common welding method used in automobile and other industries, and 7000 series aluminum (Al) alloys have become a very common industrial material because of their high strength and easy machinability. Scandium (Sc) is often used for alloy strengthening; however, there are few studies on the RSW joints of aluminum alloys containing scandium. Here, 7075-T6
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Static and dynamic mechanical analyses of E-glass–polyester composite used in mass transit system Emerging Mater. Res. (IF 2.2) Pub Date : 2022-12-19 Somanath Ojha, Himanshu Bisaria, Smita Mohanty, Krishnan Kanny
Composite materials have distinct properties such as a high strength-to-weight ratio, high corrosion resistance, a high modulus-to-weight ratio and wear resistance. The potential, strong mechanical properties and lower cost of E-glass fiber motivated the authors to carry out this work. Tensile, flexural and Izod impact tests were used in the current study to conduct a static analysis of an E-glass-reinforced
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Development of polyetherimide mixed-conductor membranes for hydrogen separation Emerging Mater. Res. (IF 2.2) Pub Date : 2022-12-06 Yousef Alqaheem, Abdulwahab Alhindi
Polymeric membranes can provide an energy-efficient solution for gas separation such as hydrogen recovery. Nevertheless, the membrane performance is limited by the trade-off phenomenon between permeability and selectivity. The addition of fillers such as zeolite can overcome this constraint. However, it is difficult to reproduce the membrane due to the agglomeration of zeolite. In this work, mixed
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Structural, electrical, and thermistor behavior of BiFeO3-PbZrO3 for energy storage devices Emerging Mater. Res. (IF 2.2) Pub Date : 2022-11-21 Priyambada Mallick, S K Biswal, S K Satpathy, Banarji Behera
The solid-state reaction technique is used to prepare the samples 0.3(BiFeO3)–0.7(PbZrO3) and 0.5(BiFeO3)–0.5(PbZrO3). Structural parameters including percent crystallinity, dislocation density, microstrain, and the average size of crystallites are calculated using the X-Ray Diffraction (XRD) data at room temperature. The SEM micrographs reveal the spherical, densely packed natures of the samples with
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Influence of nano-TiO2 on the chloride diffusivity of concrete Emerging Mater. Res. (IF 2.2) Pub Date : 2022-10-21 Garima Rawat, Sumit Gandhi, Yogesh Iyer Murthy
In this research, the benefits of nano-titanium dioxide (nano-TiO2) concrete over pure concrete in resisting the impacts of chloride diffusion were investigated. An increasing accelerative effect of chloride diffusion was experimentally discovered, which coincided with the movement in the exposed concrete surface caused by diffusion and the damage in concrete microstructure caused by chloride salt
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Study of optical properties of SnO2 thin films and their influence on gas-sensing response Emerging Mater. Res. (IF 2.2) Pub Date : 2022-10-17 Divya Haridas, Maya Verma, Smita Korpal, Ajay Kumar Arora, Sandeep Mahajan, Amit Tanwar, Rashmi Menon
In the present work, systematic studies on the optical properties of six tin (IV) oxide (SnO2) thin films of varying thicknesses were done and their influence on gas sensing response were studied. Refractive index and packing density of 90 nm tin (IV) oxide film was observed to be lowest among all six films which the presence of voids and defects in the film. Further, the dispersion in the refractive
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Antioxidant and enzyme inhibition activities of Spartium junceum with HPLC-DAD profiling Emerging Mater. Res. (IF 2.2) Pub Date : 2022-10-10 Nuraniye Eruygur, Fatma Ayaz, Hamide Filiz Ayyildiz, Yavuz Bağci
Spartium junceum L., a Fabaceae plant, is commonly known as Spanish broom and cultivated in the Mediterranean regions. This study aimed to investigate the chemical profiles and antioxidant and different enzyme inhibitory activities of methanol, ethanol and aqueous extracts obtained from flowers and stems of S. junceum. Also, their phenolic compositions were analyzed by high-performance liquid chromatography
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Influence of dopants in the buffer layer on CZTS solar cell performance Emerging Mater. Res. (IF 2.2) Pub Date : 2022-10-10 Pratap Kumar Dakua, Deepak Kumar Panda
Copper zinc tin sulfide (CZTS) has commanded the next generation of solar cell materials because of its superior performance, lower cost and abundant availability on earth. This study examined the impact of different dopants in the buffer layer on the electrical characteristics of solar cells. For the n-indium tin oxide/cadmium sulfide (CdS) (silver (Ag)–cadmium sulfide, copper (Cu)–cadmium sulfide
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The preparation of ZnO-based dye-sensitized solar cells using Rhus, Linaria and Punica Emerging Mater. Res. (IF 2.2) Pub Date : 2022-10-05 Neslihan Balpınar
This paper focuses on fabricating zinc oxide (ZnO)-based dye-sensitized solar cells (DSSCs) utilizing three types of dyes derived from Rhus, Linaria and Punica flowers. The zinc oxide thin films were prepared on tin-doped indium oxide-coated glass substrates at 70°C according to the successive ionic layer adsorption and reaction method. Organic sensitizers were extracted from Rhus, Linaria and Punica
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The influence mechanism of lignite thermal upgrading on moisture re-adsorption Emerging Mater. Res. (IF 2.2) Pub Date : 2022-10-05 Lei Fan, Chun Hu, Huimin Gong, Qinghai Ren, Xingshuai Fan, Xin Cheng
The influence mechanism of lignite thermal upgrading on moisture re-adsorption was investigated using analytical techniques such as differential thermal analysis–thermogravimetry, Fourier transform infrared spectroscopy and scanning electron microscopy. The results showed that the moisture content of lignite decreased from 44.78 to 25.07% through the drying process. After the moisture in the lignite
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Growth characteristics of shallots and absorption of Mg ions dissolved from serpentinites Emerging Mater. Res. (IF 2.2) Pub Date : 2022-10-05 Fei-Shuo Hung
Magnesium (Mg)-rich water or food is highly beneficial to human health. Shallots are used in cooking, have simple growth conditions and have a short growth cycle. In this study, natural serpentinite was ground into powder (particle size: 50–200 nm), heated at high temperatures (400 and 800°C) and then dissolved in water of different temperatures (25, 60 and 100°C) to prepare natural magnesium-containing
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Study on the mechanical and tribological properties of C/C composites by CVI and PIP Emerging Mater. Res. (IF 2.2) Pub Date : 2022-09-16 Fei Li, Yuqin Ma, Wei Xu, Wen Zhu, Gangfeng Wang, Yi Xu, Haiyin Guo, Yatao Li
Carbon/carbon (C/C) composites are created through chemical vapor infiltration and precursor infiltration and pyrolysis. The bending, compressive and tribological properties of C/C composites and graphite materials are compared and studied. The influence of the fiber volume fraction on the mechanical properties of the specimen is investigated. The results reveal that increasing the volume fraction
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Expansion potential of skin grafts with novel rotating-triangle-shaped auxetic incisions Emerging Mater. Res. (IF 2.2) Pub Date : 2022-09-15 Vivek Gupta, Shubham Gupta, Arnab Chanda
Millions of burn injuries are reported every year, with severe cases needing skin graft implantation. To date, the highest achievable expansion produced by split-thickness skin grafting has been reported to be just three times, which is insufficient for covering large burn sites with limited donor site skin. In this work, the authors studied the expansion potential of skin grafts with rotating-triangle
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Photodegradation of methyl orange based on manganese-substituted bismuth ferrite nanoparticles Emerging Mater. Res. (IF 2.2) Pub Date : 2022-09-15 Ahmad Umar, Subburaj Ruby, Savariroyan Stephen Rajkumar Inbanathan, Daniel Rani Rosaline, Rajesh Kumar, Hassan Algadi, Ahmed A Ibrahim, Pau Loke Show, Sotirios Baskoutas
Herein, a microwave-assisted approach for the synthesis of manganese (II) (Mn2+)-doped bismuth ferrite (BMFO) nanoparticles is presented. Various techniques were used to examine the structure, morphology and electrical characteristics of the as-synthesized BMFO nanoparticles. X-ray diffraction and Raman analysis revealed a rhombohedral distorted perovskite structure with space group R3c. The crystallite