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BiAg Alloy Nanospheres: A New Photocatalyst for H2 Evolution from Water Splitting

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journal contribution
posted on 26.11.2014, 00:00 by Zhengbo Jiao, Yan Zhang, Shuxin Ouyang, Hongchao Yu, Gongxuan Lu, Jinhua Ye, Yingpu Bi
We demonstrate for the first time that Bi and BiAg alloy nanospheres, fabricated with a facile hydrothermal method, display evident photocatalytic H2 production activities. Element Bi can serve as an active photocatalyst for both water splitting and photoelectrochemical applications. More interestingly, these activities of Bi can be greatly enhanced by introducing Ag to form BiAg alloy nanoparticles, which may be ascribed to the improved charge separation and enlarged carrier concentration. The constituent of the BiAg alloy can be rationally tuned by varying the amount of Ag nanowires, and it is found that Bi0.7Ag0.3 exhibits the highest photoelectrochemical property.