材料科学
面(心理学)
分解水
接口(物质)
电荷(物理)
光电化学电池
金属
纳米技术
光电化学
光电子学
工程物理
化学物理
光催化
电化学
电极
物理化学
复合材料
冶金
毛细管数
毛细管作用
电解质
化学
工程类
心理学
社会心理学
生物化学
量子力学
五大性格特征
催化作用
物理
人格
作者
Xiangtao Chen,Chao Zhen,Jianjun Li,Jianhang Qiu,Na Li,Nan Jia,Gang Liu
标识
DOI:10.1002/adfm.202409566
摘要
Abstract Crystal facet‐dependent photogenerated charge transfer at the semiconductor/current collector interface of photoelectrodes is equally important compared to that at the semiconductor/liquid interface for efficient photoelectrochemical (PEC) water splitting, which, however, is difficult to explore due to the rigid solid/solid interface in conventional photoelectrodes. Here, the facet‐dependent charge transfer at both semiconductor/liquid and semiconductor/collector interfaces in liquid metal‐embraced photoelectrodes is systematically investigated using faceted BiVO 4 micro‐particles with different ratios of {110} and {010} facets as model materials. The results from the photo(electro)chemical and photophysical characterizations reveal that {010} facets outperform {110} facets at the semiconductor/liquid interface in triggering water oxidation due to the lower valence band maximum (VBM) of {010} facets, while {110} facets are more efficient at the semiconductor/metal interface for the collection of photogenerated electrons due to their higher conduction band minimum (CBM). Consequently, the photoelectrodes of liquid metal‐embraced BiVO 4 particles exposing 53% {110} facets yield the best PEC performance for water splitting due to the well‐balanced photogenerated charge transfer at the interfaces of semiconductor/metal and semiconductor/liquid.
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