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- Title
Fabrication of Z-scheme Bi5O7I/MIL-53(Fe) hybrid with improved photocatalytic performance under visible light irradiation.
- Authors
Zhou, Nan; Tan, Junjie; Li, Xi; Wang, Lu; Jin, Chenglong; Chen, Ming; Yu, Zhengsong; Liang, Yani; Qiu, Zhidong; Li, Wenlong; Dong, Yulin; Xie, Zhizhong; Lin, Yawei; Qu, Deyu; Zhang, Chaocan
- Abstract
A series of Bi5O7I/MIL-53(Fe) (BOI/MIL-w) composites were successfully prepared by a facile in-situ solvothermal approach. The matched energy bands enabled Bi5O7I and MIL-53(Fe) to form a Z-scheme heterojunction which resulted in an efficient separation of the photo-induced electron–hole pairs. The photocatalytic activity of BOI/MIL-w was evaluated by the degradation of Rhodamine B (RhB) in water under the visible light irradiation. Compared with Bi5O7I, photocatalytic performances of BOI/MIL-w notably boosted. When the content of added MIL-53(Fe) was 3 wt%, BOI/MIL-3 presented the highest activity with a degradation efficiency of 99.7% only after 60 min of irradiation. The reaction rate constant k could reach 0.0992 min−1 which was nearly 12.6 times as high as that of Bi5O7I. Moreover, BOI/MIL-w had a good stability and reusability, which could ensure its practical application. Trapping experiments confirmed that h+ and ·O2− were the dominant active species during the photocatalytic process, and further demonstrated the formation of the Z-scheme heterojunction facilitated the photocatalytic performance of BOI/MIL-w.
- Subjects
VISIBLE spectra; IRRADIATION; RHODAMINE B; ENERGY bands; HETEROJUNCTIONS
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 6, p4822
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-020-03044-z