CuO/WO3/TiO2 photocatalyst for degradation of phenol wastewater

Abstract

CuO/WO3/TiO2 photocatalyst was prepared by applying the sol-gel combustion method. It was characterized by X-Ray uorescence spectroscopy, X-Ray di raction, X-Ray photoelectron spectroscopy, porosimetry, and scanning electron microscopy techniques. The activity of CuO/WO 3 /TiO 2 was investigated for the photocatalytic degradation of phenol wastewater. Operating conditions of batch experiments, such as initial concentration of phenol, photocatalyst dose, amount of H2O2, and pH, were optimized. Rate constants of the pseudo rst-order reaction for several photocatalysts were determined (TiO2: 0.0054 min 1 , WO3/TiO2: 0.0071 min 1 , CuO/TiO2: 0.0118 min 1 , CuO/WO 3 /TiO 2 : 0.0621 min 1). The CuO/WO 3 /TiO 2 had the best performance, and its rate constant was 11.5 times greater than TiO 2. The CuO/WO 3 /TiO 2 activity was considerable under sun light. The activity of CuO/WO3/TiO2 for 4-chlorophenol and 3-phenyl-1-propanol degradation was also successful.

Studying the photocatalytic oxidation of hydroxybenzene in aquatic medium on the photocatalizers SnO2, ZnO, TiO2

“…As a result, we obtain a photocatalyst with a developed nanoporous structure, which gives possibility to reach a high degree of degradation of hydroxybenzene. Authors of work [16] investigated CuO/WO 3 /TiO 2 photocatalyst composition obtained by sol gel technology. They established dependences of a photocatalyst activity change on Ph and an amount of Н 2 О 2 additionally introduced into the solution.…”

“…As noted in the literature review [13][14][15][16] above, there is another oxide effectively used to oxidize organic compounds in an aqueous medium. This is titanium oxide (IV).…”

Comparative study of photocatalytic activity of metals- and non-metals doped ZnO and TiO2 nanocatalysts for advanced photocatalysis

“…However, owing to their band gap range, they have limitations for the photodegradation of pollutants. For doing so, TiO2 and ZnO photocatalysts can be combined with other compounds to synthesize an efficient photocatalyst, some of which include La/TiO2 [20], CuO/WO3/TiO2 [21], Fe3O4/TiO2 [22], carbon-doped TiO2 [23], N,P-codoped carbon quantum dots/TiO2 [24], Fe3O4/CuO/ZnO/graphene [25], rGO/Fe3O4/ZnO [26], tungsten/silver/ZnO [27], Pb/ZnO, Cd/ZnO, Ag/ZnO [28], and Bi (12)ZnO (20) [29].…”

Effects of substrate temperature and sputtering gas composition on physical properties and photocatalytic activities of WOx thin films deposited via radiofrequency sputtering

“…This has been achieved by loading metal nanoparticles, such as Pt, Au, and Ag, onto the surface of WOx particles or by combining other photocatalytic thin films on WOx surfaces. [19][20][21][22][23][24][25] WOx has great potential for wide application as a photocatalytic material. Thus, the investigation of the physical properties of WOx, e.g.…”