Simultaneously Efficient Light Absorption and Charge Separation in WO3/BiVO4 Core/Shell Nanowire Photoanode for Photoelectrochemical Water Oxidation
Simultaneously Efficient Light Absorption and Charge Separation in WO3/BiVO4 Core/Shell Nanowire Photoanode for Photoelectrochemical Water Oxidation
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DOI：
10.1021/nl500022z
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发表时间：
2014-02-01
期刊：
影响因子：
10.8
通讯作者：
Zheng, Xiaolin
中科院分区：
文献类型：
--
作者：
Rao, Pratap M.;Cai, Lili;Zheng, Xiaolin
我们报道了一种可规模化合成的WO 3/BiVO 4核/壳纳米线光阳极，其中BiVO 4是主要的光吸收剂，WO 3作为电子导体。这些核/壳纳米线实现了迄今为止基于BiVO 4的光阳极中光吸收和电荷分离效率的最高乘积，并且即使没有添加催化剂，在模拟阳光下也产生3.1 mA/cm（2）的光电流，并且在300-450 nm处的入射光子-电流转换效率类似于60%，两者都在1.23 V相对于RHE的电势下。
We report a scalably synthesized WO3/BiVO4 core/shell nanowire photoanode in which BiVO4 is the primary light-absorber and WO3 acts as an electron conductor. These core/shell nanowires achieve the highest product of light absorption and charge separation efficiencies among BiVO4-based photoanodes to date and, even without an added catalyst, produce a photocurrent of 3.1 mA/cm(2) under simulated sunlight and an incident photon-to-current conversion efficiency of similar to 60% at 300-450 nm, both at a potential of 1.23 V versus RHE.