Synthesis of Bi6O6(OH)3(NO3)3·1.5H2O/ZnO composite material with excellent photocatalytic hydrogen production performance. Issue 2 (3rd April 2021)

• Record Type: Journal Article
• Authors: Wang, Lingyi; Sun, Shichang; Zhong, Ziqing; Gong, Qingguang; Jiang, Xingpeng; Zhou, Weiming; Wang, Liwei; Lin, Ming; Yuan, Zhanhui
• Is Part Of: International journal of smart and nano materials. Volume 12:Issue 2(2021)
• Page Start: 185
• Page End: 197
• Publication Date: 2021-04-03
• Subjects: Bi6O6(OH)3(NO3)3·1.5H2O -- ZnO -- heterojunction -- composite materials -- photocatalytic hydrogen evolution; Smart materials -- Periodicals; Nanostructured materials -- Periodicals; Nanoscience -- Periodicals; 620.505
• DOI: 10.1080/19475411.2021.1933251
• Languages: English
• ISSNs: 1947-5411

Abstract

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, Bi6 O6 (OH)3 (NO3 )3 · 1.5H2 O (BBN) and ZnO are used to construct and synthesize Bi6 O6 (OH)3 (NO3 )3 · 1.5H2 O/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. Graphical abstract: uf0001