Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 47, Issue 6, Pages 3781-3790Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.11.021
Keywords
Microbial coupled photocatalytic fuel cell; g-C3N4/ZnO/Bi4O5Br2; Double Z-scheme heterojunction; Wastewater purification; Energy generation
Categories
Funding
- Natural Science Foundation of Jiangsu Province [BK20181074]
- China Postdoctoral Science Foundation [2021M691327]
- Jiangsu Postdoctoral Science Foundation [2021K313C]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX20_2925]
- Priority Academic Program Development of Jiangsu Higher Education Institutions [JSIMR202013]
- Jiangsu Ocean University talent introduction startup fund [KQ18005]
- Major Scientific and Technological Innovation Projects of Key R&D Programs in Shandong Province, China [2019JZZY020234]
- Lianyungang Postdoctoral Research Foundation
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A novel heterostructure of g-C3N4/ZnO/Bi4O5Br2 was designed and used in a microbial coupled photocatalytic fuel cell. This heterostructure effectively improves electron utilization efficiency and pollutant degradation. Experimental results show efficient degradation of dyes and antibiotics under different conditions using this heterostructure.
A novel heterostructure of g-C3N4/ZnO/Bi4O5Br2 (ZB-3) was designed, and used in the microbial coupled photocatalytic fuel cell (MPFC). It can effectively improve electron utilization efficiency and pollutant degradation using this double Z-scheme heterojunction structure. The current-time (I-t) curves demonstrated that the current density of ZB-3 was higher than that of ZnO, ZnO/Bi4O5Br2 (ZB-1), g-C3N4/ZnO (ZB-2). Electrochemical impedance spectroscopy (EIS) indicated ZB-3 possessed the minimum charge-transfer resistance. This MPFC for degrading rhodamine B (RhB) and tetracycline (TC) under different conditions were developed using these materials. Even in the dark condition, MPFC with g-C3N4/ ZnO/Bi4O5Br2 demonstrated 93% and 82% degradation efficiency for RhB and TC, respectively. Furthermore, the electron transport mechanism of the MPFC and ZB-3 were proposed. It paves the approach for more efficient pollutant degradation via MFC photocatalysis. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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