Microemulsion synthesis and photocatalytic activity of visible light-active BiVO_4 nanoparticles

查看全文 作　　者：LIU Wei WANG XiangFei CAO LiXin SU Ge ZHANG Lan WANG Yong [1]Gang

机构地区：[1]Institute of Materials Science and Engineering,Ocean University of China,Qingdao 266100,China

出　　处：《Science China Chemistry》索引2011年第54卷第5期,共6页

基　　金：supported by the Foundation for Outstanding Young Scientist of Shandong Province (BS2010CL049);the Program for New Cen-tury Excellent Talents in University (NCET-08-0511) 摘　　要：A water-in-oil microemulsion made up of a cyclohexane/n-hexyl alcohol/Polyethylene glycol tertoctylphenyl/aqueous solution including Bi3+ and VO+3 ions yields the spherical BiVO4 precursors with the size from 5 to 300 nm. Well-crystallized monoclinic scheelite BiVO4 particles with nanometer or micrometer size are fabricated in control by heating microemulsion precursors under various temperatures. The corresponding nucleation and growth process of as-prepared samples has also been investigated via TEM,which demonstrates the detailed morphological evolution of nuclei inside the precursors. As-prepared BiVO4 photocatalysts exhibit enhanced photocatalytic activity under visible-light irradiation in comparison with the bulk BiVO4 prepared by solid-state reaction. The highest RB degrading efficiency of 98% in 180 min under visible-light irradiation is observed for the sample calcined at 600 °C. 关键词：光催化活性微乳液透射电子显微镜可见光照射合成纳米粒子聚乙二醇形态演变

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Microemulsion synthesis and photocatalytic activity of visible light-active BiVO_4 nanoparticles

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