Visible-light active thin-film WO₃ photocatalyst with controlled high-rate deposition by low-damage reactive-gas-flow sputtering

Highly enhanced photocatalytic activity of WO3 thin films loaded with Pt–Ag bimetallic alloy nanoparticles

“…This is because WO 3 thin lm can be repeatedly used without a complicated recycling process, which is necessary for conventional powder photocatalysts, and is hardly lost during photocatalytic reaction. 11,[20][21][22][23][24][25][26][27][28] In this work, we fabricated WO 3 thin-lm photocatalysts co-modied by Pt-Ag bimetallic alloy nanoparticles (Pt-Ag/WO 3 ) by simultaneously photo-depositing Pt and Ag precursor ions on a WO 3 thin lm to address the shortages of monometals Pt and Ag. Based on a systematic, comparative study of the microstructure, chemical environment and electrochemical characteristics of the prepared Pt/WO 3 , Ag/WO 3 , and Pt-Ag/WO 3 thin lms, the transfer paths of photo-generated charges and photocatalytic mechanism were proposed.…”

Supported-Metal Oxide Nanoparticles-Potential Photocatalysts

“…Recently, the researchers have proposed many strategies for the fabrication of WO 3 thin film [88], such as sputtering deposition [89][90][91][92], aerosol-assisted chemical vapor deposition [93,94], sol-gel spin-coating [95,96], hydrothermal-assisted growth [97,98], and surfactant-assisted spray pyrolysis [99,100]. Many works focused on the photocatalytic efficiency of WO 3 , especially the studying of WO 3 thin film as a photocatalyst in the visible region [84,101].…”

Enhanced photocatalytic performance of tungsten-based photocatalysts for degradation of volatile organic compounds: a review

“…Noble metal (Pt, Ag and Pd) loaded onto WO 3 were confirmed to be a promising photocatalyst attributed to the surface plasmon resonance effect of noble metal nanoparticles, which can accelerate the effective transfer of free charges to the surface of WO 3 and facilitate the generation of active free radicals [76][77][78]. Zhao et al [79] researched that loading appropriate Pt nanoparticles onto WO 3 can enhance photocatalytic activity for removal of acetaldehyde.…”