Efficient Charge Separation between Bi and Bi2 MoO6 for Photoelectrochemical Properties.
Efficient Charge Separation between Bi and Bi2 MoO6 for Photoelectrochemical Properties.
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DOI：
10.1002/chem.201504604
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发表时间：
2016-04
期刊：
影响因子：
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通讯作者：
Ying Ma;Yulong Jia;Li-na Wang;Min Yang;Yingpu Bi;Yanxing Qi
中科院分区：
文献类型：
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作者：
Ying Ma;Yulong Jia;Li-na Wang;Min Yang;Yingpu Bi;Yanxing Qi
本文采用原位还原法制备了多孔Bi/Bi2 MoO6纳米颗粒。此外，通过改变反应时间可以控制产物的形态和铋含量。通过控制制备，获得了含有铋的多孔Bi2 MoO6纳米结构，并表现出较高的光电和光催化活性。特别是，样品产生的光电流密度为320 μA cm(-2)，是相同条件下纯Bi2 MoO6纳米片（100 μA cm(-2)）的3.2倍。紫外/可见漫反射光谱分析证实了制备的多孔纳米颗粒存在表面等离子体共振。光电性能的改善可能是Bi2和Bi2 MoO6之间具有大表面积的多孔结构和有效的电子-空穴分离的协同作用。
Herein, porous Bi/Bi2 MoO6 nanoparticles have been prepared by a facile in-situ reduction approach. Moreover, the morphology and Bi content of product could be controlled by varying the reaction time. By controlled fabrication, the desired porous Bi2 MoO6 nanostructure with incorporation of Bi was obtained and exhibited high photoelectric and photocatalytic activity. In particular, the samples yield a photocurrent density of 320 μA cm(-2) , which is 3.2 times that of the pure Bi2 MoO6 nanosheet (100 μA cm(-2) ) under the same conditions. UV/Vis diffuse reflectance spectroscopy analysis confirmed the surface plasmon resonance in the as-prepared porous nanoparticles. The improved photoelectric properties could be the synergistic effect of the porous structure with large surface area and effective electron-hole separations between Bi and Bi2 MoO6 .