(040)-Crystal Facet Engineering of BiVO4 Plate Photoanodes for Solar Fuel Production
(040)-Crystal Facet Engineering of BiVO4 Plate Photoanodes for Solar Fuel Production
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DOI：
10.1002/aenm.201501754
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发表时间：
2016-02-18
影响因子：
27.8
通讯作者：
Kang, Young Soo
中科院分区：
文献类型：
--
作者：
Kim, Chang Woo;Son, Young Seok;Kang, Young Soo
研究了（040）晶面工程化BiVO 4（（040）-BVO）光阳极用于太阳能燃料生产。（040）-BVO光阳极有利于提高载流子迁移率和高的光催化活性位点用于太阳能转换。（040）-BVO光电阳极的这种晶体刻面设计导致太阳能燃料生产的能量转换效率的增加和氧气析出速率的增强。（040）-BVO光阳极的光电流密度在AM 1.5 G照明下被确定为0.94 mA cm（-2），并且在1.23 V（vs RHE，可逆氢电极）下产生42.1%的吸收的光子-电流转换效率。（040）面驱动的电荷分离效率和电荷注入效率的提高在1.23 V下可以产生0.02 mmol h（-1）的氢气。研究了（040）-BVO光阳极与太阳能燃料产量之间的相关性。研究结果为利用BiVO 4光阳极开发太阳能燃料提供了一种有前途的方法。
A (040)-crystal facet engineered BiVO4 ((040)-BVO) photoanode is investigated for solar fuel production. The (040)-BVO photoanode is favorable for improved charge carrier mobility and high photocatalytic active sites for solar light energy conversion. This crystal facet design of the (040)-BVO photoanode leads to an increase in the energy conversion efficiency for solar fuel production and an enhancement of the oxygen evolution rate. The photocurrent density of the (040)-BVO photoanode is determined to be 0.94 mA cm(-2) under AM 1.5 G illumination and produces 42.1% of the absorbed photon-to-current conversion efficiency at 1.23 V (vs RHE, reversible hydrogen electrode). The enhanced charge separation efficiency and improved charge injection efficiency driven by (040) facet can produce hydrogen with 0.02 mmol h(-1) at 1.23 V. The correlation between the (040)-BVO photoanode and the solar fuel production is investigated. The results provide a promising approach for the development of solar fuel production using a BiVO4 photoanode.