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.

本研究通过一种新颖、简单的溶剂热-光还原方法制备了具有可调节富氧空位的Bi ₂ MoO ₆，该方法可能适合大规模生产。实验结果表明，富含氧空位的Bi ₂ MoO _{6是一种优异的光催化剂。}BMO-10的光催化能力比原始Bi ₂ MoO _{6高0.3和3.5倍}分别用于罗丹明 B 降解和 Cr(VI) 还原。结果表明，氧空位样品的带能变窄，光吸收变宽。同时，提高了光生电子空穴的效率，提高了光生载流子的分离和传输速度。因此，本工作为制备电位可调的氧空位光催化剂以消除水中染料和Cr(VI)的污染提供了一种便捷有效的方法。