Facet Effect of Single-Crystalline Ag3PO4 Sub-microcrystals on Photocatalytic Properties
Facet Effect of Single-Crystalline Ag3PO4 Sub-microcrystals on Photocatalytic Properties
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DOI：
10.1021/ja2002132
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发表时间：
2011-05-04
影响因子：
15
通讯作者：
Ye, Jinhua
中科院分区：
文献类型：
--
作者：
Bi, Yingpu;Ouyang, Shuxin;Ye, Jinhua
我们最近报道了Ag3PO4在可见光照射下表现出优异的光氧化能力，可以分解水中的氧气和有机染料。然而，关于Ag3PO4晶体的形状和小面效应对其光催化性能的影响还知之甚少。在这里，我们开发了一种简便、通用的方法来制备单晶Ag3PO4菱形十二面体，其中只露出{110}个小面，立方体完全由{100}个小面包围。此外，对其光催化性能的研究表明，菱形十二面体对有机污染物的降解活性远高于立方体，这可能主要归因于{110}面的表面能(1.31J/m(2))高于{100}面的表面能(1.12J/m(2))。
We recently reported that Ag3PO4 exhibits excellent photooxidative capabilities for O-2 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/m(2)) than of {100} facets (1.12 J/m(2)).