Nishapur is a historical city in the ancient Khorasan region, located in the northeast of Iran. Due to its location on the Silk Road, Nishapur enjoyed great economic prosperity and as a result contains many archaeological sites from prehistoric to post-Islamic periods. Shahrak-e Firouzeh is one such site, dating back to 2nd millennium BC, containing numerous metallic objects and metallurgic remains

Hard yet tough nanocomposite coatings with simultaneously high plastic deformation resistance and elastic deformation recovery capacity represent a new class of compressor protective coatings, which are vital for its serviceability in high sand dust environments due to the blocking effect of nanocrystalline amorphous structure on dislocation and crack. In this work, a set of CrAlSiN (nc-(Cr,Al)N/a-Si3N4)

Polymeric membranes separation among the new and reliable separation and purification techniques in terms of energy consumption, ease of the process, and high selectivity due to polymer properties can be tailored to specific needs. This comprehensive review highlights polymeric membranes' current development, specifically on thin film nanocomposite membranes for alcohol dehydration via pervaporation

Polydimethyl siloxane (PDMS) CuO nanocomposites (NCs) were prepared using plain CuO and cetyltrimethyl ammonium bromide (CTAB) capped (0.05 & 1.0M) CuO nanoparticles as nanofillers. Incorporation of plain CuO and CuO-1M capped NP as nanofillers into PDMS altered their surface roughness and imparted biocidal activity by release of metal ions. CTAB capping increased the zeta potential of synthesized

In this manuscript, the structure liking a Chinese food “hemp flowers” is formed through polyphenyl which is induced by C70. The whole formation process is tracked by the molecular dynamics simulation. The results exhibited that C70 induced polyphenyl to form a “hemp flowers” structure experiencing four stages which are transfer, wrap, maintain and twist. Both the van der Waals potential well and the

Oxidation and corrosion protective coatings on graphite are essential for its high temperature applications. In the present work, oxidation protective coating on graphite was achieved with a combination of Y2O3 and SiO2 suspension with NaOH in methanol. Study showed that the optimized composition of the desired coating was Y2O3–15 wt% SiO2 (i.e., 2 g mixture of Y2O3 and SiO2 powder containing 0.3 g

We report a unique methodology of triggering plasmonic excitations in sputtered ultrathin CIGSe films. In this approach of plasmonic excitation, secondary ion source present in the growth system instigates the formation of nanoclusters of its constituent elements, which is the source of plasmonic excitation. The formation of the nanoclusters during the growth is because of the distinct sputtering out

Recently, Due to the importance of photocatalysts in different applications, numerous strategies have been studied to improve its performance. Herein, we refuge to create a built-in electric field by building the hole inversion layer at the interface layer between In2O3/BiVO4 composite as n-n heterojunction semiconductor. The results show an enhancement in photocatalytic activity due to the impact

Organic-inorganic hybrid perovskite solar cells (PSCs) are one of the most promising technologies in the field of photovoltaics due to its high-power conversion efficiency (PCE) and easy fabrication process. However, its moisture stability has posed a crucial hurdle towards its further commercialization. In this paper, we have introduced an interfacial layer, cerotic acid (CA), inspired from the honeycomb

Boride-based ultra-high temperature ceramics have been extensively utilized as high temperature thermal protection materials due to its excellent physical and mechanical properties. Yet, the synthesis of boride-based ceramic powder with high purity, ultra-fine structure and excellent dispersity remains a great challenge to reach. In this work, zirconium diboride (ZrB2) ultra-high temperature ceramic

This study explores stability and variations of a mercaptobenzimidozole-inhibitor-based film upon the surface of Al alloy AA6022 and its contribution to the long-term corrosion inhibition in 0.1 M NaCl. Results provide a deeper insight and understanding of the mechanisms of combined inhibitor film formation and oxide layer growth, up to 240 h exposure, and the effect that the intermetallic particles

Water electrolysis powered by renewable energy sources to produce green hydrogen is a very promising and sustainable alternative to fossil fuels, as well as one of the best approaches for significantly reducing carbon footprints and controlling pollution. In this study, novel hybrid non-stoichiometric nanocomposite Co3S4/Co0.85Se electrocatalyst materials were synthesized using a simple and one-pot

Recent advancements in biomedical, transportation and energy sectors have resulted in high demands for advanced materials with superior resistance to creep deformations. In particular, understanding contact and friction creep are vital in numerous applications such as implants, high-temperature turbines/engines, advanced automobiles, and trains as well as microelectromechanical switches. Contact area

In this research, to enhance the corrosion resistance of low carbon steel in the H2SO4 solution, the leech extract as a novel bio-inhibitor was utilized. Electrochemical tests were applied to investigate corrosion characteristics of steel in the corrosive acid solution. Moreover, the atomic force microscopy (AFM) and the field emission scanning electron microscopy (FE-SEM) techniques were performed

The dispersive and polar components of surface energy of a polymer thin film are hypothesized to be reduced by introduction of intramolecular interactions to pull side chains to the backbone and by establishment of hydrophobic interactions between extended alkyl chains to compact the molecular volume. A series of new polymer, polyepichlorohydrin (PECH)-triazole polymer with side chain with different

TiO2-hydroxyapatite nanocomposites were prepared by the simultaneous gelation of titanium alkoxide and precipitation of a re-dissolved natural phosphate mineral in ammonia and tested for drug degradation in solution under UV light. Pharmaceuticals were preferentially adsorbed on the apatite-rich composites, whereas their photodegradation was more effective in the TiO2-rich phases. At high TiO2 content

Carbon nanotubes (CNTs) and graphene (Gr) are promising materials for flexible transparent conductive films (TCFs) in optoelectronic application because of their exceptional electrical, optical, and mechanical properties. Here, high-quality graphene nanosheets were synthesized by the one-step green method which using natural polyphenols-gallic acid (GA) as the exfoliation medium through high-pressure

Herein, we report an innovative fabrication of agglomerate eco-friendly and bio-waste based hydroxyapatite/reduced graphene oxide hybrid material modified carbon paste electrode (BHA/rGO/CPE) for the detection of dopamine (DA). In the present exertion, environmental bio-waste eggshells were utilized to synthesize the hydroxyapatite (BHA) material. Further, BHA/rGO hybrid material was synthesized via

The Graphene/copper matrix (Gr/Cu) composite foils were successfully fabricated by pulse electrodeposition from copper sulfate solution containing graphene nanoplates ranging from 0.04 to 1.6g/L. The morphology, microstructure, tensile properties and nanoindentation hardness of Gr/Cu composite foils were characterized. The results indicated that the few-layer graphene nanoplates were distributed in

Recent studies have shown promising results regarding the power conversion efficiency, band-gap tunability, and interfacial charge carrier ability of organic lead halide perovskites. In light of these fundamental abilities, we fabricated a heterostructure: MAPbBr3 spin-coated on an FePd alloy layer, consisting of both magnetic and optical capabilities. The perovskite’s discrete coverage across the

Focused on the design and construction of controllable surface microtopographyand interconnected pore morphologyof porous poly (L-lactic acid) membrane. Asimple solvent evaporation-induced precipitation methodis proposed to regulate microstructures by one-step method without any additive. Controllable microstructures (fibrous networks, interconnected pores, and crystallized PLLA protrusions) and interconnected

This paper reports the effects of low energy X-ray irradiation doses on the structures, morphologies and absorbance of some colloidal gold nanoparticles (AuNPs) produced in distilled water via the one-step pulse laser ablation in liquid (PLAL) method. An Nd:YAG pulse laser (wavelength of 1064 nm and fluence range of 0.076 -7.692 J/cm 2) was used to ablate the gold plate surface (acted as a target)

Biochar has excellent electrochemical properties and is an ideal renewable green material for many types of energy storage equipment. Nevertheless, most of the biochar materials currently reported as supercapacitor electrodes require a great specific surface area above 1000 m2/g. Here, we first reported the use of two forestry wastes, extracted residue of lacquer wax (RP) and Acer truncatum husk (ATH)

Large overpotential and poor cyclability are the main constraints for lithium-oxygen batteries (LOBs), which are usually related to the slow decomposition of the discharge product during oxygen evolution reaction (OER) of charging process. In this paper, a novel method of pulse current charging is developed for solving these problems. The results show, compared with the normal constant current samples

In this work, a facile polyvinylpyrrolidone (PVP) assisted solvothermal route using mixed solvents was reported to synthesize uniform quaternary chalcogenide Cu2FeSnS4 (CFTS) particles. PVP played a crucial role in tuning the shape and size of the resulted CFTS particles. Without PVP irregular shaped CFTS particles were obtained, however, quasi-spherical CFTS particles were produced by addition of

Microbial treatment of heavy metals is a low-cost and environmentally friendly method. During the treatment of chromium pollution, environmental media has a great impact on the efficiency of bacteria Cr immobilization. However, when Cr(VI) coexist with different metal cations, the reduction of Cr(VI) and the immobilization of Cr by bacteria are still unclear. In our research, although bacteria were

Structural, electronic and optical properties of Cd1-xZnxS and CdTexS1-x alloys at different Te and Zn concentrations (x = 0, x = 0.25, x = 0.5, x = 0.75 and x = 1) are investigated using the density functional theory (DFT). The structural parameters of these ternary alloys are optimized using the functional PBEsol, as a version of GGA. Electronic and optical properties are calculated using the TB-mBJ

Spherical, flower and rod-like zinc oxide nanostructures have been successfully biosynthesized at 70 °C in the presence of milk protein casein through a simple precipitation method. The concentration of casein in an alkaline medium determines the structure of zinc oxide. The chemical synthesis of highly crystalline zinc oxide nanostructures is accomplished at relatively low processing temperature using

Superhydrophobic surfaces have always engrossed the attention of researchers due to the uniqueness in their surface architecture and the associated multifaceted applications. Many materials and fabrication techniques have been reported recently to specifically design and enhance the hydrophobicity of surfaces. Electrospinning technique is one such novel preparation technique used to fabricate superhydrophobic

In the present effort, a highly responsive electrochemical sensor made up of a carbon nanotube paste electrode modified with a thin layer of electrochemically polymerised L-Leucine was employed for the determination of cetirizine (CTZ) in the presence of paracetamol. In contrast to bare carbon nanotube paste electrode (BCNTPE), a noticeable shift in the peak potential along with an enhancement in the

As one of the most widely used optical films, antireflective coating (ARC) is widely used in lasers, display screens and solar cells. In this article, the double-layer ARC coating consists of a bottom layer using SiO2-TiO2 composite nanomaterials and a top layer of SiO2 modified with Hexamethyldisilazane (HMDS). The optimal parameters of the double-layer ARC were obtained through the simulation software

Synthesis of highly pure YbMnO3 nanostructures was carried out in this study using the electrochemical method. A variety of mechanical features consisting of the particles’ size, strain as well as lattice constant, could be achieved through Nelson-Riley functions, Scherrer's equation, Williamson-Hall techniques, after which their comparison with computational as well as XRD data was performed. The

The oxide nanoparticles have been claimed as the lubricant additive, which are capable of alleviating wear and reducing friction for the engine components. However, how oxide nanoparticles speficially behave together with the representative additive (Zinc dialkyl dithiophosphate, ZDDP) in the formulated engine oil, is still poorly understood. The results well revealed that the addition of oxide nanoparticles

In this paper, the detection performances of carbon black (CB) for bisphenol A (BPA) can be greatly improved by using a surfactant of cetyltrimethylammonium bromide (CTAB). The cyclic voltammetry (CV) behavior of CTAB/CB for BPA can be improved 6 times, compared with CB. The hydrophobicity of the CTAB long-chain alkyl end can enhance the enrichment ability of BPA. Meanwhile, CB can act as an electron

A variety of reactive structures containing chemical reactions in the process of combustion, biochemical frames, and catalysis are homogeneous-heterogeneous (H-HR). Besides, chemical reactions are used as part of applications such as hydrometallurgical industries of food manufacturing, dispersion and forming fog, manufacture of polymers and ceramics. The purpose of the current study is to examine H-HR

Advanced thermal barrier coatings (TBCs) have attracted particular attention due to their low thermal conductivities and high phase stabilities. The thermal properties and failure behaviors of advanced TBCs still remain a challenge in the thermal shock test. This work focuses on thermal expansion coefficient, thermal conductivity, microstructure evolution and failure behaviors of the GdYbZrO/ Y2O3-stabilized

Photoelectrochemical (PEC) water splitting provides a promising and sustainable method to obtain hydrogen fuels for solar energy storage. Photoanode as the core component in such a system has played a pivotal role in determining the solar conversion efficiency. Herein, we report an Au fishnet/Fe2O3/CoAl LDH sandwich structure as the photoanode with the aim of improving its PEC water splitting efficiency

The present work describes the production of carboxymethylcellulose (CMC) -hydroxyethyl cellulose (HEC) hydrogel films using citric acid as a non-toxic crosslinking agent, for a potential application in wastewater treatment. After their synthesis, all films were then characterized through Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), UV-Visible spectroscopy (UV-Vis)

In this study, a novel application of backpropagated Levenberg-Marquardt neural networks (LM-NN) based computational intelligent heuristics is presented to interpret the analysis of Maxwell nanofluid thin film flow over a stretchable and rotating disk by considering magnetic and non-linear thermal radiation effects. Utilizing the Buongiorno model, thermophoretic and Brownian motion features of nanofluid

Highly ordered nanoporous structures developed by anodising aluminium and its alloys have potential applications in various fields, including wear-resistant coatings in tribology. Filling nanopores with different metals and solid lubricants provide a nanocomposite coating which has a higher hardness. A major hurdle in developing the nanocomposite coatings is that a thick non-conducting barrier layer

Control of surface wettability is very important and useful for many industrial applications, and can be realized by controlling surface chemistry and microstructure simultaneously. Here, we present a facile laser-based surface texturing method to achieve switchable wettability control on titanium surface. The experimental results indicate that the laser-treated surfaces became superhydrophilic immediately

Yttria-stabilized zirconia (YSZ) coatings were deposited at various arc currents of atmospheric plasma spraying. Two different technological configurations were used to form YSZ coatings; in first case, the plasma torch moved along the coated surface, while in another case, the coatings were formed on rotating substrate surface placed in front of the plasma torch. The thermal tests of the YSZ coatings

In the present investigation, ternary nanocomposite of reduced graphene oxide rGO, Nickel sulphde (NiS) and gold nano cube (rGO/NiS/AuNCs) has been synthesized by adopting a facile single step hydrothermal method. The electrochemical interfacial property of the composite materials is obtained from cyclic voltammetry and electrochemical impedance spectroscopy (EIS). The crystal structure, surface morphology