We have explored the impact of the incorporation of nanoporous carbons as additives to tungsten oxide on the photocatalytic degradation of two recalcitrant pollutants: rhodamine B (RhB) and phenol, under simulated solar light. For this purpose, WO3/ carbon mixtures were prepared using three carbon materials with different properties (in terms of porosity, structural order and surface chemistry)...

This study reports the synthesis and characterization of tungsten trioxide-based catalysts for photocatalytic degradation N-nitrosodiethylamine (NDEA) in wastewater. Tungsten trioxide (WO3) was synthesized using thermal treatment method (TTM) hard template replication (HTRM) impregnated with lanthanum (La), iron (Fe), chromium (Cr), silver (Ag) to enhance its light absorption ability. The were ...

Composite materials, which can optimally use the advantages of different materials, have been studied extensively. Herein, hybrid tungsten nitride and oxide (WN/WO3) composites were prepared through a simple aqueous solution route followed by nitriding in NH3, for application as novel sensing materials. We found that the introduction of WN can improve the electrical properties of the composites...

Potassium ions are successfully intercalated into WO3 nanobundles with the integrity of the pseudo-orthorhombic structure remaining intact. The nanobundles display a 5-fold increase in the electrical conductivity. It changes from a value of 10(-4) Sm(-1) for pure WO3 to 40 Sm(-1) upon potassium intercalation. The electrical conductivity also increases by ~200 times as temperature increases from...

INTRODUCTION Penicillin G (PG) is used in a variety of infectious diseases, extensively. Generally, when antibiotics are introduced into the food chain, they pose a threat to the environment and can risk health outcomes. The aim of the present study was the removal of Penicillin G from an aqueous solution through an integrated system of UV/ZnO and UV/WO3 with Ultrasound pretreatment. METHODS ...

Background: In recent years, there has been an increased interest toward non-lead radiation shields consisting of small-sized filler particles doped into polymer matrices. In this paper, we study a new polyvinyl alcohol (PVA)/WO3 composite in the presence of high-energy gamma photons through simulation via the Monte Carlo N-Particle (MCNP) simulation code. Materia...

The motivation of using metal oxides is mainly due to its charge storage capabilities, and electrocatalytic, electrochromic and photoelectrochemical properties. But comparing with bulk, nanostructured materials present several advantages related with the spatial confinement, large fraction of surface atoms, high surface energy, strong surface adsorp‐ tion and increased surface to volume ratio, ...

In this paper, a solar cell based on WO3/CdTe heterojunction was analyzed and optimized, for which the following structure of Al/AZO/WO3/CdTe/NiO/Ni device proposed, numerically simulated by SCAPS 1-D software. Using software, effect thickness carrier concentration absorber layer (CdTe) window (WO3) analyzed, optimal value these parameters found to be 2 µm 1015 cm−3 CdTe 10 nm 1019 WO3 layer, r...

New cerium and/or tungsten modified V2O5–TiO2 aerogel catalysts (V2O5–TiO2,V2O5–WO3–TiO2, V2O5–CeO2–TiO2 and V2O5–WO3–CeO2–TiO2) were successfully developed, by associating the sol gel procedure supercritical drying approach. A combination of various analytical techniques, including XRD, N2-Physisorption at 77 ?K, DRUV-Vis spectroscopy, NH3-TPD H2-TPR, was used to characterize obtained solids. ...

Cr2W3O12, one of the members negative thermal expansion family A2M3O12, is reported to be prepared by solid-state method with Cr2O3 and WO3, which was impossible before. Here, synthesis Cr2W3O12 carried out sintering. The powder mixture WO3 obtained using Zn(CH3COO)2 · 2H2O as catalyst. When (0–25 mol. %) added 15 20 % excess much formed especially because addition 10 2H2O. For comparison, comm...