Ag/BiPO4 heterostructures: synthesis, characterization and their enhanced photocatalytic properties.
Ag/BiPO4 heterostructures: synthesis, characterization and their enhanced photocatalytic properties.
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DOI：
10.1039/c3dt51056e
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发表时间：
2013-08
影响因子：
4
通讯作者：
Yuanan Zhang;H. Fan;Mengmeng Li;Hailin Tian
中科院分区：
文献类型：
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作者：
Yuanan Zhang;H. Fan;Mengmeng Li;Hailin Tian
采用水热法结合浸渍法制备了Ag/BiPO 4异质结构。该异质结构表现出比纯BiPO 4更高的活性，降解亚甲基蓝，这可能主要归因于高效的光生电子-空穴对分离。它们还显示出良好的可再循环性和在可见光区的稍强吸收。此外，对Ag/BiPO 4异质结构光催化性能增强的可能机理进行了讨论。此外，自由基清除剂实验证实，空穴是主要的活性物种，而不是羟基自由基时，与BiPO 4表面的贵金属纳米晶Ag耦合。
Ag/BiPO4 heterostructures were synthesized by a hydrothermal method combined with an impregnation technique. The heterostructures exhibit much higher activity than pure BiPO4 for degradation of methylene blue, which may be primarily ascribed to highly efficient photogenerated electron-hole pair separation. They also show good recyclability and slightly strong absorption in the visible region. In addition, the possible mechanism for the enhanced photocatalytic properties of Ag/BiPO4 heterostructures is discussed. Moreover, radical scavengers experiments confirmed that holes are the main active species instead of hydroxyl radicals when coupled with the BiPO4 surface by the noble nanocrystalline metal Ag.