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王少莽老师在“Applied Catalysis B: Environmental”发表研究论文

   发布时间: 2015-01-17    访问次数: 888

Fabrication of a bifunctional material of BiOI/Ag3VO4 with high adsorption-photocatalysis for efficient treatment of dye wastewater

      Shaomang Wang, Yuan Guan, Liping Wang, Wei Zhao, Huan He, Jun Xiao, Shaogui Yang*, Cheng Sun*

 

 

 http://dx.doi.org/10.1016/j.apcatb.2014.12.047.(SCI 区,IF=6.007

Abstract

A novel bifunctional material with high adsorption-photocatalysis, BiOI/Ag3VO4 was successfully synthesized using a facile solvothermal method followed by the chemical precipitation. Among the heterogeneous materials, the 30 wt% BiOI/Ag3VO4 exhibited the optimal performance of adsorption-photocatalysis. The removal of 25 mg/L of basic fuchsin, malachite green and crystal violet over 30 wt% BiOI/Ag3VO4 was about 97%, 92% and 85%, respectively, after the adsorption for 1h and then visible-light degradation for 2 h. The investigations of adsorption kinetics and isotherm demonstrated that the adsorption process followed the pseudo-second-order kinetic model and the Freundlich adsorption isotherm, respectively. The sequence of work function calculated by first-principles using CASTEP code was Ag < Ag3VO4 < BiOI, which promoted efficient separation of electron-hole pairs resulting in greatly enhanced photoactivity of BiOI/Ag3VO4.