Heterogeneous activation of peroxymonosulfate by Cu+-decorated g-C3N4 under sunlight for degradation of organic pollutants

doi:10.1016/j.jece.2021.106596

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	Heterogeneous activation of peroxymonosulfate by Cu+-decorated g-C3N4 under sunlight for degradation of organic pollutants
	Yang, Linhai 1,2; Ren, Xuechang 1; Zhang, Yujie 1; Chen, Zuoyan 1
刊名	JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
	2021-12
卷号	9 期号:6
关键词	Cu+/g-C3N4 PMS Sunlight RhB Mechanism
DOI	10.1016/j.jece.2021.106596
英文摘要	This article is an in-depth study of the basis of Cu+-decorated triazine-based g-C3N4 (Cu+/g-C3N4) nanosheet-activated H2O2. In this study, peroxymonosulfate (PMS) was activated by Cu+/g-C3N4 under sunlight and used to treat simulated wastewater RhB. The properties of g-C3N4 and Cu+/g-C3N4 were characterized by UV-Vis DRS and PL. The results indicated that the introduction of Cu+ in g-C3N4 can enhance the separation of photogenerated electron-hole pairs. The Cu+/g-C3N4(1:4) samples exhibited the best PMS activation performance under sunlight when 0.5 g/L catalyst dose and 0.5 mmol/L PMS concentration were used, and the removal rate of RhB reached 95.7% in 30 min. Moreover, better catalytic activity of the system can be achieved in the initial pH range of 2.0-10.0. The investigation results of the catalytic mechanisms showed that the prepared Cu+/g-C3N4 catalyst constructs a dual reaction center of Cu+/Cu2+ cycling and e(CB)(-)/h(VB)(+) transfer for efficient PMS activation. The degradation of pollutants benefits from the participation of a variety of free radicals, which are generated by sunlight-assisted heterogeneous activation of PMS. This study has resulted in substantial progress in activating multiple oxidants with a single heterogeneous catalyst and provides a feasible way to treat refractory wastewater using Cu+/g-C3N4 with PMS under sunlight.
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000715057000006
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150067]
专题	石油化工学院
作者单位	1.Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Peoples R China; 2.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Yang, Linhai,Ren, Xuechang,Zhang, Yujie,et al. Heterogeneous activation of peroxymonosulfate by Cu+-decorated g-C3N4 under sunlight for degradation of organic pollutants[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2021,9(6).
APA	Yang, Linhai,Ren, Xuechang,Zhang, Yujie,&Chen, Zuoyan.(2021).Heterogeneous activation of peroxymonosulfate by Cu+-decorated g-C3N4 under sunlight for degradation of organic pollutants.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,9(6).
MLA	Yang, Linhai,et al."Heterogeneous activation of peroxymonosulfate by Cu+-decorated g-C3N4 under sunlight for degradation of organic pollutants".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 9.6(2021).