Facet Effect of Single-Crystalline Ag3PO4 Sub-microcrystals on Photocatalytic Properties

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• 作者：Yingpu Bi ; Shuxin Ouyang ; Naoto Umezawa ; Junyu Cao ; Jinhua Ye
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：May 4, 2011
• 年：2011
• 卷：133
• 期：17
• 页码：6490-6492
• 全文大小：753K
• 年卷期：v.133,no.17(May 4, 2011)
• ISSN：1520-5126

文摘

We recently reported that Ag₃PO₄ exhibits excellent photooxidative capabilities for O₂ evolution from water and organic dye decomposition under visible-light irradiation. However, very little is known about the shape and facet effects of Ag₃PO₄ crystals on their photocatalytic properties. Herein we have developed a facile and general route for high-yield fabrication of single-crystalline Ag₃PO₄ rhombic dodecahedrons with only {110} facets exposed and cubes bounded entirely by {100} facets. Moreover, studies of their photocatalytic performance have indicated that rhombic dodecahedrons exhibit much higher activities than cubes for the degradation of organic contaminants, which may be primarily ascribed to the higher surface energy of {110} facets (1.31 J/m²) than of {100} facets (1.12 J/m²).