Thin films of tungsten nitride were deposited from Cl4(CH3CN!W~N Pr) by metallorganic chemical vapor deposition ~MOCVD! in the presence and absence of ammonia (NH3) coreactant. Films were analyzed by X-ray diffraction, Auger electron spectroscopy, and X-ray photoelectron spectroscopy ~XPS!. Films grown with NH3 had increased nitrogen levels and decreased carbon and oxygen levels relative to fil...

A series of advanced WO3-based photocatalysts including CuO/WO3, Pd/WO3, and Pt/WO3 were synthesized for the photocatalytic removal of microcystin-LR (MC-LR) under simulated solar light. In the present study, Pt/WO3 exhibited the best performance for the photocatalytic degradation of MC-LR. The MC-LR degradation can be described by pseudo-first-order kinetic model. Chloride ion (Cl-) with prope...

Here, we present the results of the resistive response of tungsten trioxide nanowire (mat-like, nanowire networks) and nanoparticle thin films subjected to N2O gas in the temperature range of 373–773 K. The nanowire mats exhibited an order of magnitude higher response in the resistivity change compared to that of nanoparticle films at temperatures above 523 K. Nanowire mats also exhibited relat...

Recently, a growing amount of effort has been devoted to solving the widespread problem of pollution. Photocatalysts have attracted increasing attention for their widespread environmental applications. Here, a classic and simple electrospun technique is used to directly fabricate a porous a tungsten oxide nanoframework with graphene film as a photocatalyst for degradation of pollutants. The as-...

An efficient and stable quantum dot light-emitting diode (QLED) with double-sided metal oxide (MO) nanoparticle (NP) charge transport layers is fabricated by utilizing the solution-processed tungsten oxide (WO3) and zinc oxide (ZnO) NPs as the hole and electron transport layers, respectively. Except for the electrodes, all other layers are deposited by a simple spin-coating method. The resultin...

Tungsten oxide (WOx) thin film, which is well known as an electrochromic display, was deposited on the ITO film coated flexible substrates using the RF magnetron sputtering method. Phenomena of processing plasmas, the film quality and the electrochromic properties of deposited WO3 thin film have been studied as parameters of a gas pressure and gas mixture. Experimental results suggest that depo...

Tungsten oxide supported on ZrO2 is receiving increased attention as a solid acid catalyst due to its important industrial applications, such as the isomerization of C4-C8 alkanes to upgrade gasoline octane number. It is known that the catalytic activity depends on the structure of WOx species and their interaction with ZrO2 support [1], so a thorough structural characterization is essential fo...

High selectivity, enhanced sensitivity, short response time and long shelf-life are some of the key features sought in the solid-state ceramic-based chemical sensors. Since the sensing mechanism and catalytic activity are predominantly surface-dominated, benign surface features in terms of higher aspect ratio, large surface area and, open and connected porosity, are required to realize a succes...