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

Abstract

This study provides a novel approach to design efficient WO3 photocatalysts decorated by bimetallic Pt–Ag alloy nanoparticles.

Crystal phase content-dependent functionality of dual phase SnO2–WO3nanocomposite filmsviacosputtering crystal growth

“…WO 3 is also an n-type semiconductor with a wide bandgap of approximately 2.6-3.6 eV that has been used in gas sensor and catalytic materials. 12,13 WO 3 thin lms are usually prepared through sputtering methods. 14 The band alignment between SnO 2 and WO 3 crystals exhibits a type II band heterojunction, and this composite system is reportedly benecial in reducing the recombination rate of photogenerated carriers in lms.…”

An External Energy Independent WO3/MoCl5 Nano-Sized Catalyst for the Superior Degradation of Crystal Violet and Rhodamine B Dye

“…WO 3 has been widely used as a visible light-response photocatalyst absorbing light at wavelengths up to 480 nm and has intriguing advantages, such as its harmless low cost and stability [25][26][27][28]. MoCl 5 is an aggressive oxidant but cannot be recycled [29,30].…”

One-step controllable synthesis of three-dimensional WO3 hierarchical architectures with different morphologies decorated with silver nanoparticles: enhancing the photocatalytic activity

“…6e presents the high-resolution XPS Ag 3d spectra of sample W-0.20Ag as reference: the peaks are assigned to the binding energies of Ag 3d 3/2 and Ag 3d 5/2 , with values of about 373.9 and 367.8 eV. 52 The XPS results, based on the binding energies of the Ag 3d level of samplesW-0.20Ag, suggest metallic Ag NPs. Similar results were observed for the as-prepared samples W-0.01Ag and W-0.05Ag.…”

“…This nding is also in agreement with results already presented in literature in which an energy band-gap decrease was observed for metal-load tungsten oxide. 55,56 To investigate photocatalytic activity of various 3D hierarchical architecture, we performed photocatalysis experiments. Rhodamine B, a typical dye, was used as the test pollutant.…”