Solid state reaction technique was employed to fabricate oxygen sensors based on Y, Cr co-doped CaZrO3. The X-ray diffraction, scanning electron microscopy, electrochemical impedance spectroscopy, electron-blocking method were employed to investigate the crystal structure, surface morphology, and electrical properties such as phase formation, microstructure, the oxygen vacancy concentration, ionic

Bidirectional flows of Williamson nanomaterial in porous space is discussed. Nonlinear model contains thermophoresis and Brownian motion. Bidirectional non-linear and time-dependent stretching sheet velocity is considered. Nanoparticles zero mass flux condition is accounted. Modified Darcy’s law is invoked. Resulting nonlinear systems are computed by optimal homotopy analysis method (OHAM). Numerical

The Aegle marmelos essential oils (AMEOs) were loaded on surface of the chitosan nanoparticles (CHs NPs), and it performed against carbapenemase producing K. pneumoniae. The physiochemical characterizations of CHs, CHs NPs and AMEOs-CHs NPs were confirmed by FTIR and powder XRD. The morphological observation, size, shape of the SEM and TEM results confirmed that the AMEOs was successfully coated onto

Silica nanoparticles are used as additives to organic coatings to modify their properties. The interface of inorganic nanoparticles with an organic matrix can be a preferred location for accumulation of water. Surface treatment of nanoparticles with 3-glycidoxypropyltrimethylsilane (silane) is one way to reduce the water accumulation. In this work, using atomistic simulations (MD), we studied the effects

In this work we investigate the strain state in Ni films belonging to [Ni(tNi)/Cu(tCu)] × N superlattices (with tNi = 2 nm, 3 nm, tCu from 0 to 3 nm and N between 1 and 6) by Extended X-ray Absorption Fine Structure at the Ni K-edge. The strain of these Ni blocks can be up to 80% larger than that obtained for single thin films with the same content of Ni. The dependence of the strain on N indicates

A simple phyto-assisted synthesis of zinc oxide nanowires (ZnO NWs) employing urinary tract infection (UTI) controlling traditional medicinal plant Pedalium murex L. mucilage, their silver (Ag) doping by co-precipitation method has been reported. The synthesized Ag-doped ZnO NWs photocatalytic action on the UTI antibiotic nitrofurantoin (NFT) and the dye methylene blue (MB) has been reported. The synthesized

The effects of W addition on the corrosion behaviors of FeCoNiCrMn high entropy alloy composites in 3.5 wt.% NaCl solution are investigated in this study. The X-ray diffraction and scanning electron microscopy suggest that the quantity of added W particles results in the increasing quantity of particles in the composites and large amount of cohesionless phases covering the matrix occur in the alloy

Surface of (NH4)3H(SeO4)2 crystals and its evolution in the course of the transition from the ferroelastic to the superprotonic phase were studied by optical polarization microscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and energy-dispersive X-ray spectroscopy (EDXS). The morphology of fresh cleavage surfaces was examined. The composition and local electrical properties

Broadband transparent photodetectors are achieved through the formation of a metal oxide heterojunction. A high transmittance of 66.63% for visible light (400–800 nm) results from the wide energy bandgaps of TiO2 (3 eV) and NiO (3.86 eV). The metal-oxide heterojunction generates a photovoltaic effect due to the high open-circuit voltage (0.4 V), which spontaneously drives the NiO/TiO2 photodetector

The success of photocatalysis in different applications majorly depends on the efficiency or activity of the catalysts used in the visible light region. Although, several photocatalysts have been reported to be efficient in various photocatalytic applications, bismuth-based chalcogenides are one of the compounds with unique performance. This is because they possess band gap energies that allow them

The optical properties of inorganic cesium lead bromide perovskite quantum dots (CsPbBr3-PQDs) make them particularly suitable for use as semiconductors. However, surface defects limit the performance of PQDs-based materials and devices. Consequently, this study investigated a surface passivation approach using a special polymer coating under standard conditions. In encapsulation materials, one of

A novel ionic liquid modified graphene oxide supported Mo-complex [GO@IL/MoO2(acac)2] was successfully prepared, characterized and its catalytic application was investigated. The GO@IL/MoO2(acac)2 catalyst was prepared through the surface modification of graphene oxide with alkyl imidazolium chloride followed by treatment with molybdenyl acetylacetonate. The GO@IL/MoO2(acac)2 catalyst was characterized

In the current study, Thunbergia grandiflora (Bengal clock vine) leaf extract has been used as green-resource to prepare Fe3O4 nanoparticles. SEM image showed agglomerated spherical (25 nm) particles, and EDS ascertained the existence of elemental iron (between 6 – 7 k eV) and oxygen (at 0.5 keV). XRD and XPS designated signature peaks for Fe3O4. BET studies revealed a high specific surface area of

In this study the biomedical and catalytic ability of green synthesized nickel Oxide nanoparticles (NiONPs) was investigated. The extract of medicinal plant Tribulus terrestris were used to synthesized NiONPs. The as-synthesized NiONPs were in nano scale and were characterized with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), High-Resolution Transmission Electron Microscopy

Emerging sensor technology has led to develop high-performance sensors that satisfy most of the sensing parameters. However, still further advances are needed for sensors to achieve low detection, which is crucial for the detection of low concentration analytes present in the solution. Herein, we designed a sensor electrode with gold nanoparticles (AuNPs) functionalized single polypyrrole nanowire

The adsorption of DNA on the surface is the basic task of mesoporous silica nanoparticles (MSN) because of its surface charge characteristics. Therefore, without covalent conjugation, the adsorbed DNA can be used directly as the ideal goalkeeper of MSN to encapsulate various cargoes in pores. However, some critical issues regarding the DNA encapsulated cargoes in MSN remain unknown and almost no systematic

To date, EPD obtained ZnO one-dimensional nanostructures have been achieved by depositing ZnO nanoparticles through a sacrificial anodic alumina membrane or promoted by the presence of pre-deposited Au nanoclusters on the substrate. In the present work, we explored using boron (p-type)-doped crystalline Si (100) substrates with different conductivities. We found the conditions for the direct self-assembly

In this study, superhydrophobic Co3O4 surfaces with micro/nano hierarchical structures were synthesized on the stainless steel mesh (type: 304, size: #50) by the chemical bath deposition (CBD) method. Taguchi L9 experimental design was applied to evaluate the influence of the type and concentration amounts of the additives, the zinc salt solution concentration as the seeding medium, and the reaction

Ta-doped SnO2 (TTO) films were deposited at 3 × 10−3 Torr pressure from the 6 wt. % Ta2O5-doped SnO2 target at temperatures of 30–500 °C in Ar sputtering gas. The Ta dopants in the SnO2 host lattice were detected via X-ray photoemission, EDX mapping, and photoluminescence spectra. The Ta5+–Sn4+ substitution formed the OOxat VOxsites in the host lattice and the substitution occurred at deposition temperatures

Fused-ring non-fullerene electron-accepting materials have been well designed and synthesized to adopt into the high-efficiency organic solar cells (OSCs). Y6, as an epoch-making non-fullerene acceptor (NFA), remarkably promoted the power conversion efficiency (PCE) over 18% in 2020. After then, Y6-based OSCs enjoy a rapid growth in both the device performance and fundamental studies. In this review

This report describes a fabrication route for membrane electrode assembly (MEA) with low Pt loading based on Nafion/sulfonated graphene oxide (SGO) nanocomposite membrane. The Pt catalyst was directly electroless deposited on both sides of Nafion/SGO membranes and electrochemical performance of the fabricated MEAs toward hydrogen adsorption/desorption reactions were studied. The effects of Nafion SGO

Sodium ion batteries (NIBs) have gradually become an alternative to lithium ion batteries. Prussian blues (PBs) are regarded as a promising kind of cathode materials for NIBs, but their poor electrical conductivity has always been a considerable issue limiting its performance. In our work, we have optimized the PB cathode by utilizing reduced graphene oxide (RGO) as the conductive additive, whose performance

Chromium (VI) is recognized as a highly toxic contaminant metal ion, due to its potential toxic effect to human and animal health. From the most common processes applied for Cr (VI) ions removal is the sorption process hence it has been highly efficient and inexpensive technique. In the present work, a bio-synthesized Ag/ZnO nanocomposite loaded on activated carbon as a new eco-friendly and effective

Through an ecofriendly, economic and one pot method, the TiO2@Fe3O4@Quartz nanocomposite (NCs) was fabricated using the antioxidant potential of the Allium tricoccum extract and quartz as a natural geosubstrate (G.S). Also, high performance liquid chromatography (HPLC) analysis of the plant and evaluation of its total phenolic content (TPC) revealed its high potential to biosynthesis of the catalyst

Interface engineering of the device layers of halide perovskite solar cells has shown the potential to improve efficiency and stability. In this paper, the interface mechanism between the halide perovskite layer FAPbI3 and SnO2 was clarified by first-principles calculations. Results showed that the formation energies of the FAI interface and the PbI2 interface were -0.107eV and -0.087eV respectively

The present work examines undoped and vanadium (V) doped cerium dioxide (CeO2) thin films prepared by an automated spray pyrolysis technique. The doping concentrations are 2,4, 6, and 8 at.%. Various characterization techniques were carried out to investigate the vanadium effect on the structural as well as the optical properties of the CeO2 films. The study also focused on inspecting the electrochemical

In this paper, the stability of low-temperature-gaseous-carburization (LTGC) layer in AISI316L stainless steel was investigated by exposing at temperature between 100 ℃ to 400 ℃ from 150 h to 3000 h in air. Test results show that, after carburization, a carburized layer with high carbon content, hardness and huge compressive residual stress form on the surface of 316L. The carburized layer is phase

In this paper, employing a hydrothermal method, we synthesized Cu2O nanoparticles and Cu2O@C core–shell. The scanning electron microscope (SEM), X -Ray diffraction (XRD), dynamic light scattering (DLS) and zeta potential techniques were used for characterized of the Cu2O nanoparticles and Cu2O@C core–shell. The zeta potential values were obtained to be -11.16 mV and -0.88 mV for Cu2O and Cu2O@C, respectively

Manganese doped zinc oxide (MZ) nanocomposites was uniquely synthesized using co-precipitation method. The photocatalytic activity of the synthesized MZ nanocomposites was studied under ultraviolet light irradiation by the photodegradation of malachite green (MG), a toxic organic dye. MZ3 (1:25) nanocomposite This show the best photocatalytic activity among the different molar ratios of Mn/Zn by studying

Flexible antiadhesive polymer surfaces were fabricated using an array of microgrid patterns generated by three-dimensional (3D) printing. A disadvantage of the fused deposition modeling-type 3D printing (rough surface) was utilized to create casting molds with microgrid patterns. The shape of the microscale pattern was controlled by rotating the bottom epoxy mold where polylactic acid filaments were

Recently, nanofluids are working in diverse applications for instance, hybrid-mechanical mechanisms, malice usage, micro microelectronic, therapeutic diligences, aeronautics zones, thermonuclear depots and conserving of diverse machines etc. The deferments of nanofluids could be acknowledged and exploited as projecting forthcoming for the progression of viable energy strategies. This effort deals with

We have successfully synthesized and transferred graphene (Gr) monolayers on top of epitaxial mixed valence La0.7Sr0.3CoO3 (LSCO) thin films. Raman spectroscopy reveals that Jahn-Teller (JT) modes associated with the oxygen octahedral distortions usually unobserved for bare LSCO are activated by the deposited graphene. The appearance of these JT modes in the Gr/LSCO heterostructure is attributed to

Herein we report on the spin coated thin films of Zn-doped TiO2 on glass substrates with various Zn concentrations (2 ‒8 at %). The structural, chemical, optical and morphological properties were investigated using X-ray diffraction (XRD), Raman spectroscopy, photoluminescence (PL), UV-Visible spectroscopy, X-ray Photoelectron Spectroscopy (XPS) and Field Emission Scanning Electron Microscopy (FESEM)

We have examined the adsorption of methane (CH4) and carbon dioxide (CO2) molecules on the perfect and Pd-adsorbed stanene nanosheets using the first-principles computations. Since CH4 and CO2 molecules represent weak physisorption on the pure stanene, we have placed the Pd adatom on the hollow site of stanene sheet to enhance the interaction between stanene and methane molecule. The band structure

6,6,12-graphyne is found to be promising electronic materials in the field of nanoelectronic device. Previous studies have found that the 6,6,12-graphyne shows anisotropic current and negative differential resistance (NDR) and lithium (Li) decorated 6,6,12-graphyne has been found to be a potential hydrogen storage material. Herein, the electronic transport properties of Li decorated monolayer 6,6,12-graphyne

In this study, the effects of plasma nitriding surface treatment on the structural, tribological and thermal properties of Ti45Nb Beta alloy were investigated experimentally. Plasma nitriding process of Ti45Nb alloy was performed in 25% Ar-75% N2 gas mixture, for treatment times of 1–4 hours at the temperatures of 700–750 °C. The tribological tests of the plasma nitrided alloy were performed in dry

Using fluorescence quenching of quantum dot nano-particles is a promising technique for determination of chemical species. In most cases these measurements have been done in liquid phase. Immobilization of quantum dot nano-particles on a solid bed offer easier separation, preconcentation, washing the interferences and quick fluorescence measurements of different analyts so that the quantum dots are

The aim of the current article is to investigate the rotating Maxwell nanofluid flow with double stratification and activation energy. The heat and mass transfer analysis is examined with the influence of variable thermal conductivity and thermophoretic effects. The flow analysis is presented over a linear / exponential stretching sheet. Theory of the boundary layer is considered to modify the flow

Sol–gel method was used to prepare a Si-Ti-epoxy organic–inorganic hybrid composite sol, which was cured on the carbon steel surface at room temperature to obtain a transparent film. Based on the scanning electron microscopic image, the microscopic morphology of the film is flat, smooth, and dense. The atomic force microscopic image shows a nanometer scale morphology, and the structure of the Si-Ti-epoxy

Un-doped, Sb doped (ATO) and Li-Sb co-doped SnO2 (LATO) transparent conducting thin film electrodes have been deposited using facile spray pyrolysis method. X-ray diffraction study is carried out to confirm the crystal structure, phase purity, and textured growth of the films. Surface morphological transition from dendritic to cuboid shape is observed upon Li-Sb co-doping into the SnO2 system from

The heteroatom (S, N) content of the electrode material influences supercapacitor performance. Coals, which are abundant in nature, have different heteroatom contents. Activated carbon materials were synthesised from two different demineralised coal with low and high sulphur contents using chemical activation method. The samples are characterised in terms of total surface area, pore volume and size

We successfully formed nanostructured TiN, CrN, and multilayered TiN/CrN coatings on the Ni-Cr alloy using a cathodic arc evaporation (CAE) technique. Coatings were exposed to artificial saliva solutions with two pH of 5 and 8 to investigate their ion release. We measured the surface roughness of produced coatings using atomic force microscope (AFM). CrN coatings exhibited smoother surface, while TiN

This work aims to give readers a comprehensive understanding of the optoelectronic properties of the CuCrO2 delafossite oxide. CuCrO2 is a transparent conductive thin film material with excellent intrinsic p-type conductivity. Lots of excellent properties of CuCrO2 have been investigated extensively, such as its photocatalytic properties, thermoelectric properties and ferromagnetic properties, etc

The wastes formed from various industries' activities draw attention to their ability to be used as a natural adsorbent or as a source for activated carbon production. In this study, we aimed to produce activated carbon rich in surface functional groups from biomass. Surface functional groups of activated carbons (AC) were enriched by HNO3 oxidation. The activated carbons were synthesized with H3PO4