Photoreduction adjusted surface oxygen vacancy of BiMoO for boosting photocatalytic redox performance

2023, Volume 17, Issue 12

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Frontiers of Chemical Science and Engineering >> 2023, Volume 17, Issue 12 doi: 10.1007/s11705-023-2353-5

Photoreduction adjusted surface oxygen vacancy of BiMoO for boosting photocatalytic redox performance

Received: 2023-05-09 Accepted: 2023-10-13 Available online: 2023-10-13

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Abstract

In this study, Bi₂MoO₆ with adjustable rich oxygen vacancies was prepared by a novel and simple solvothermal-photoreduction method which might be suitable for a large-scale production. The experiment results show that Bi₂MoO₆ with rich oxygen vacancies is an excellent photocatalyst. The photocatalytic ability of BMO-10 is 0.3 and 3.5 times higher than that of the pristine Bi₂MoO₆ for Rhodamine B degradation and Cr(VI) reduction, respectively. The results display that the band energy of the samples with oxygen vacancies was narrowed and the light absorption was broadened. Meanwhile, the efficiency of photogenerated electron-holes was increased and the separation and transfer speed of photogenerated carriers were improved. Therefore, this work provides a convenient and efficient method to prepare potential adjustable oxygen vacancy based photocatalysts to eliminate the pollution of dyes and Cr(VI) in water.

Keywords

Bi₂MoO₆ ; oxygen vacancies ; photoreduction ; Cr(VI) ; RhB

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