Simultaneously Efficient Light Absorption and Charge Separation in WO 3 /BiVO 4 Core/Shell Nanowire Photoanode for Photoelectrochemical Water Oxidation

作者：Pratap Mahesh Rao, Lili Cai, Chong Liu, In Sun Cho, Chi Hwan Lee, Jeffrey M. Weisse, Peidong Yang, Xiaolin Zheng · 发表于：Nano Letters · 年份：2014 · DOI：10.1021/nl500022z · 被引用次数：723 · 研究领域：Advanced Photocatalysis Techniques、Copper-based nanomaterials and applications、Gas Sensing Nanomaterials and Sensors

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 ∼ 60% at 300-450 nm, both at a potential of 1.23 V versus RHE.