In situ synthesis of BiVO4/BiOBr microsphere heterojunction with enhanced photocatalytic performance

作者：Qin, Ningbo; Zhang, Sufang; He, JinYun^*; Long, Fei; Wang, Linlin

来源：Journal of Alloys and Compounds, 2022, 927: 166661.

DOI：10.1016/j.jallcom.2022.166661

• BiVO4/BiOBr heterojunction
• In situ synthesis
• Photocatalytic performance

Photocatalytic performance of semiconductor heterojunction is greatly influenced by integration degree of the components. In this work, BiVO4 nanosheets were in situ synthesized on BiOBr microsphere and a well -integrated BiVO4/BiOBr heterojunction was prepared. This method effectively prevented the agglomeration of BiVO4 nanosheets. The BiVO4/BiOBr heterojunction had a larger BET surface area, faster transfer of charge carriers and a much better photocatalytic performance than that of BiVO4. Compared with BiOBr, it had an enhanced visible-light absorbance and a better cyclic stability. Possible photocatalytic mechanism of the BiVO4/BiOBr heterojunction was proposed.

• 单位
  广西大学; 桂林理工大学