Photophysical and photocatalytic properties of Ca(1-x)BixVxMo(1-x)O4 solid solutions.
Photophysical and photocatalytic properties of Ca(1-x)BixVxMo(1-x)O4 solid solutions.
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DOI：
10.1021/jp0608729
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发表时间：
2006-05
期刊：
影响因子：
--
通讯作者：
W. Yao;Jinhua Ye
中科院分区：
文献类型：
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作者：
W. Yao;Jinhua Ye
在可见光（> ~ 420 nm）照射下，以Ca(1-x)BixVxMo(1-x)O4固溶体组成的新型光催化剂在含有牺牲试剂AgNO3的水溶液中具有增强O(2)析出活性的作用。所得固溶体除末端化合物BiVO4为单斜晶结构外，其余均为四方晶结构。随着固溶体中Bi (V)离子与Ca （Mo）离子比例的增加，固溶体的漫反射光谱单调地向长波方向偏移。讨论了光带结构和光催化性能与固溶体组成和光物理性能的关系。
New solid solutions with the composition of Ca(1-x)BixVxMo(1-x)O4 prepared by a solid-state method were found as novel photocatalysts with enhanced activity for O(2) evolution from aqueous solutions containing sacrificial reagent AgNO3 under visible-light irradiation (>420 nm). The obtained solid solutions crystallized in tetragonal crystal structures, except one of the end compounds, BiVO4, which crystallized in monoclinic structures. The diffuse reflection spectra of the solid solutions shift monotonically to a long wavelength as the ratio of Bi (V) ions to Ca (Mo) ions increases in the solid solution. The band structure and the dependence of the photocatalytic properties were discussed in relation to the solid-solution compositions and photophysical properties.