Multi-active photocatalysts of biochar-doped g-C 3 N 4 incorporated with polyoxometalates for the high-efficient degradation of sulfamethoxazole.

Autor: Yang F; Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin, 132013, China., Zhu L; Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin, 132013, China., Xu Z; Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin, 132013, China., Han Y; Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin, 132013, China., Lin X; Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin, 132013, China., Shi J; Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin, 132013, China., Sun Z; School of Chemical Engineering, Northeast Electric Power University, 169 Changchun Road, Shipyard District, Jilin, 132012, China., Duan X; Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin, 132013, China. Electronic address: duanxixin@beihua.edu.cn.
Jazyk: angličtina
Zdroj: Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2024 Nov 15; Vol. 361, pp. 124715. Date of Electronic Publication: 2024 Aug 14.
DOI: 10.1016/j.envpol.2024.124715
Abstrakt: Sulfamethoxazole (SMX) is one of major antibiotic contaminants in current aqueous environment. In this paper, waste loofah and melamine were co-carbonized to prepare biochar-doped g-C 3 N 4 (CCN) by a one-pot method and then combined with Co 2 PMo 11 VO 40 (CoPMoV) using a binder to obtain the novel polyoxometalates (POMs) photocatalytic composites (CCN/CoPMoV). The incorporation of CoPMoV dramatically reduced the photogenerated carrier recombination and led to a small band gap. Under visible light, the synergetic activation from biochar, g-C 3 N 4 and POMs can remove 98.5% of SMX (k = 0.215 min -1 ) in the peroxymonosulfate (PMS) system within 20 min and keep its high stability with the degradation of 88.9% after five cycles. Multi-active sites from CCN/CoPMoV are contributed to develop the most active species of SO 4 -∙ , ·OH, 1 O 2 , and h + . The validity in the degradation of SMX makes CCN/CoPMoV a promising and potential material for the removal of aqueous pollutants in the future.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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