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Li N, Niu Y, An W, Liu Z, Ruan F, Fan G. Unraveling charge transfer dynamics in AgBr/Bi 4Ti 3O 12/Bi 2Sn 2O 7 ternary S-scheme heterojunction photocatalyst. J Colloid Interface Sci 2024; 669:175-189. [PMID: 38713956 DOI: 10.1016/j.jcis.2024.04.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/25/2024] [Accepted: 04/29/2024] [Indexed: 05/09/2024]
Abstract
In this study, AgBr/Bi4Ti3O12/Bi2Sn2O7 (ABr/BTO/BSO) composites were successfully synthesized to facilitate multi-channel fast charge transfer. This directs the charge carriers to travel along multichannel pathways and suppresses carrier recombination. The mechanisms underlying charge transfer in the dual S-scheme heterojunction composites were elucidated using density functional theory (DFT) and in situ irradiated X-ray photoelectron spectroscopy (ISI-XPS). Furthermore, electron spin resonance (ESR) and burst experiments verified h+, ·O2 -, and ·OH as the primary active species in the catalytic process. The ABr/BTO/BSO composites demonstrated exceptional photocatalytic redox capabilities, completely degrading rhodamine B (RhB) and achieving degradation rates of 77.21% for tetracycline (TC) and 81.04% for Cr (VI). Both experimental and theoretical analyses confirmed the intrinsic efficacy of photo-induced electron movement within the composites. This research introduces innovative design concepts and strategies for the advanced exploration of electron channel transfer in ABr/BTO/BSO ternary composites and the development of novel composite photocatalytic systems.
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Affiliation(s)
- Nan Li
- College of Chemistry and Chemical Engineering, Shaanxi University of Science &Technology, Xi'an 710021, China; Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Yuhua Niu
- College of Chemistry and Chemical Engineering, Shaanxi University of Science &Technology, Xi'an 710021, China; Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an 710021, China.
| | - Wengang An
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jiin University, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
| | - Zonghang Liu
- School of Science and Engineering, Shenzhen Key Laboratory of Functional Aggregate Materials, 518172 China; The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China
| | - Fangyi Ruan
- College of Chemistry and Chemical Engineering, Shaanxi University of Science &Technology, Xi'an 710021, China; Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Guodong Fan
- College of Chemistry and Chemical Engineering, Shaanxi University of Science &Technology, Xi'an 710021, China; Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an 710021, China.
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Fan G, Zhou J, Ruan F, Li Y, Tian H, Fan D, Chen Q, Li N. The Z-scheme photocatalyst S-BiOBr/Bi2Sn2O7 with 3D/0D interfacial structure for the efficient degradation of organic pollutants. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Construction of Bi2Sn2O7/Ag/Ag3PO4 heterojunction and its photocatalytic degradation properties. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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