Issue 71, 2019

Synergetic effect of dual co-catalysts on the activity of BiVO4 for photocatalytic carbamazepine degradation

Abstract

An efficient visible-light driven three components photocatalyst for carbamazepine (CBZ) degradation has been assembled by co-loading reduction cocatalyst Pt and oxidation cocatalyst Co3O4 (MnOx) on BiVO4. The apparent rate constant of the three components photocatalyst Pt/BiVO4/Co3O4 for degradation of CBZ is 54 times that of Co3O4/BiVO4 and 2.5 times that of Pt/BiVO4, which shows a synergetic effect in the photocatalytic activity. The same synergetic effect is also observed for Pt/BiVO4/MnOx. The spatial separation of the reduction and oxidation cocatalysts could reduce the recombination of the photogenerated charges, which mainly accounts for the high photocatalytic activity of the three components photocatalyst. The photocatalytic intermediates of CBZ were detected by HPLC-ESI-MS, and a deductive degradation pathway of CBZ was proposed.

Graphical abstract: Synergetic effect of dual co-catalysts on the activity of BiVO4 for photocatalytic carbamazepine degradation

Supplementary files

Article information

Article type
Paper
Submitted
06 9 2019
Accepted
13 12 2019
First published
17 12 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 41977-41983

Synergetic effect of dual co-catalysts on the activity of BiVO4 for photocatalytic carbamazepine degradation

B. Wang, P. Li, C. Du, Y. Wang, D. Gao, S. Li, L. Zhang and F. Wen, RSC Adv., 2019, 9, 41977 DOI: 10.1039/C9RA07152K

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