Photocatalytic Activity of Cuboid WO3 Rods Loaded with AgCl Nanoparticles Under Visible Light Irradiation
Monoclinic WO3 (m-WO3 crystals with cuboid rods were used as the substrate to synthesize AgCl/m-WO3 photocatalysts, and the effects of the AgCl contents and photoreduction times on their visible-light-driven photocatalytic performance were investigated. The techniques of XRD, SEM, EDX and N2 adsorption—desorption were used to characterized the compositions, phases and microstructures of the samples. Photocatalytic degradation of rhodamine B (rhB), methyl orange (MO) and methyl blue (MB) were carried out to evaluate the photocatalytic activity of AgCl/m-WO3 under visible-light irradiation (λ ≥ 420 nm). Among such catalysts, the AgCl (30 wt%)/m-WO3 exhibits the highest visible-light-responsible photoactivity. The results indicated that the AgCl/m-WO3 photocatalyst has a higher photodegradation rate than m-WO3 and TiO2 (P25). However, these AgCl/m-WO3 materials gradually lost their photoactivity in the cycling photacatalytic tests. The related mechanisms for both the enhance photocatalytic activity and deactivation of the photocatalysts were analyzed.
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Document Type: Research Article
Affiliations: Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
Publication date: August 1, 2017
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