Why the photocatalytic activity of Mo-doped BiVO4 is enhanced: a comprehensive density functional study

Literature Information

Publication Date 2014-05-20
DOI 10.1039/C4CP01350F
Impact Factor 3.676
Authors

Kaining Ding, Bin Chen, Zhenxing Fang, Zhongfang Chen


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Abstract

To explore the origin of the enhanced photocatalytic activity of Mo-doped monoclinic BiVO4, variations of the structures and the electronic properties, as well as the adsorption behavior of water on the (010) surface, introduced by the Mo dopant have been investigated by means of density functional theory computations. For the bulk phase, Mo atoms prefer to substitute the V atoms, which can effectively accelerate the separation of carriers. For the (010) surface, Mo atoms prefer to substitute the Bi atoms at the outermost layer. Mo doping on the surface can result in surface oxygen quasi-vacancies and enhance the exposure of surface Bi atoms, which is confirmed to improve the adsorption of water molecules. Our results demonstrate that the enhanced photocatalytic activity of Mo-doped monoclinic BiVO4 is derived from the facilitated separation of photoinduced carriers and introduced surface oxygen quasi-vacancies.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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