Photoelectrochemical (PEC) water splitting has been considered
as a promising technology to produce hydrogen clean energy, and the
electrode material is one of the main reasons restricting its development.
Bismuth vanadate (BiVO4) is a promising photoanode material
for PEC water oxidation with the advantages of low cost, visible light
absorption, and suitable band edge location. Since BiVO4 was reported, tremendous efforts have been used to improve the PEC
performance, and significant achievements have been made. This minireview
first briefly introduces the theory of PEC and the basic properties
of BiVO4 and then summarizes the effects of light absorption
efficiency, charge separation efficiency, charge transfer efficiency,
and stability on the PEC performance of BiVO4-based photoanodes.
Finally, the challenges and prospects for future research on BiVO4 photoanodes are proposed for solar energy production.
Bi2MoO6/BiOI composites were synthesized by solvothermal method and photocatalytic performances were evaluated by degrading methylene blue (MB). Experiment results show that Bi2MoO6/0.5BiOI has the best photocatalytic efficiency for eliminating
92% MB in 2 h under the excitation of visible light. Such superior photocatalytic performance is due to the significantly enhanced ability to absorb visible light and separated efficiency of photogenerated electrons and holes.
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