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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >High-efficiently visible light-responsive photocatalysts: Ag3PO4 tetrahedral microcrystals with exposed {111} facets of high surface energy
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High-efficiently visible light-responsive photocatalysts: Ag3PO4 tetrahedral microcrystals with exposed {111} facets of high surface energy

机译：高效可见光响应光催化剂：Ag3PO4四面体微晶，具有暴露的{111}小面，具有高表面能

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摘要

In this article, single-crystalline tetrahedral Ag3PO4 microcrystals with exposed {111} facets was successfully synthesized via a facile wet chemical method. The tetrahedral Ag3PO4 with exposed {111} facets showed the highest photocatalytic activity in visible light irradiation among the {111}, {110} and {100} facets. By DFT calculations, it is demonstrated that the surface energy of the {111} facets is higher than that of the {110} and {100} facets. It was found that the largest band gap of the Ag3PO4 {111} surface is likely to suppress the recombination of electron-hole pairs by exploring the electronic structures of the different surfaces of Ag3PO4. Meanwhile, the dispersion between the valence bands and conduction bands of the {111} surface is beneficial for the separation of photogenerated electrons and holes on the {111} surface, which further improves the photocatalytic activity of the {111} surface.
机译：在本文中，通过简便的湿化学方法成功地合成了具有暴露的{111}面的单晶四面体Ag3PO4微晶。在{111}，{110}和{100}小平面中，具有暴露的{111}小平面的四面体Ag 3 PO 4在可见光照射下显示出最高的光催化活性。通过DFT计算，证明{111}小平面的表面能高于{110}和{100}小平面的表面能。发现通过探索Ag3PO4的不同表面的电子结构，Ag3PO4 {111}表面的最大带隙很可能抑制电子-空穴对的复合。同时，{111}表面的价带和导带之间的分散有利于{111}表面上的光生电子和空穴的分离，这进一步提高了{111}表面的光催化活性。

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