Synthesis of Bi6O6(OH)3(NO3)3•1.5H2O/ZnO composite material with excellent photocatalytic hydrogen production performance
Lingyi Wang, Shichang Sun, Ziqing Zhong, Qingguang Gong, Xingpeng Jiang, Weiming Zhou, Liwei Wang, Ming Lin, Zhanhui Yuan
International Journal of Smart and Nano Materials
Abstract
The heterojunction effect can effectively improve the separation efficiency of the photocatalyst’s photo-generated electron and hole pairs, thereby greatly improving the photocatalytic hydrogen production performance of the photocatalyst. In this paper, Bi6O6(OH)3(NO3)3·1.5H2O (BBN) and ZnO are used to construct and synthesize Bi6O6(OH)3(NO3)3·1.5H2O/ZnO (BBN/ZnO) heterojunction photocatalyst. Under UV-vis light irradiation, the BBN/ZnO composite could generate H2 with a rate of 28.66 μmol·g−1·h−1, which is higher than pure BBN (0.92 μmol·g−1·h−1) and ZnO (6.54 μmol·h−1·g−1) at around 31.1 and 4.4 times, respectively. Moreover, the experimental results found that the composite still exhibits excellent photocatalytic activity and maintains a high and stable activity in the 12-hour experiment with 3 cycles. The possible mechanism to enhance the photocatalytic behavior is attributed to the expanded light absorption range, reduced surface migration resistance, and inhibited recombination of photo-generated electron and hole pairs.
Keywords
Bi6O6(OH)3(NO3)3·1.5H2O; ZnO; heterojunction; composite materials; photocatalytic hydrogen evolution
DOI:
https://doi.org/10.1080/19475411.2021.1933251
Adsorption Link:
https://www.tandfonline.com/doi/full/10.1080/19475411.2021.1933251
21-IJSNM-Synthesis of Bi6O6(OH)3(NO3)3 1.5H2O ZnO composite material with excellent photocatalytic hydrogen production performance.pdf
