Fabrication Porous Ag/BiVO₄ Film for Efficient Degradation of Phenol under Visible Light

Abstract:

Porous BiVO4 film was fabricated by templating procedure with polystyrene (PS) balls as the template. Ag particles were loaded on the porous BiVO4 film by photoreduction technique. SEM revealed there were many pores in the film and Ag particles were successfully loaded on the porous BiVO4 film. XRD analysis indicated that the chemical state of Ag particles was metallic Ag. The experiment of photocatalytic degradation of phenol showed that the degradation rate on porous Ag/BiVO4 film was 4.74 times as much as that on the BiVO4 film. The enhanced photocatalytic performance was firstly attributed to the rapid transfer of the photogenerated electrons from BiVO4 to Ag, which could increase the charge carrier separation, limit their recombination, and enhance the photocatalytic efficiency. Furthermore, porosity of the photocatalyst may enhance diffusion process and decrease diffusion resistance of the reactants throughout the channels in the photocatalyst, and thus improves the surface reactions.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 732-735
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.732
• Online since: May 2012
• Authors: Xi Qiang Li, Xiu Fang Zhang, Xiao Li Dong, Chun Ma, Xin Xin Zhang, Hong Chao Ma
• Keywords: Ag/BiVO₄, Photocatalysis, Porous, Visible Light

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