Heterogeneous activation of peroxymonosulfate by Cu+-decorated g-C3N4 under sunlight for degradation of organic pollutants | |
Yang, Linhai1,2; Ren, Xuechang1; Zhang, Yujie1; Chen, Zuoyan1 | |
2021-12 | |
发表期刊 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING |
ISSN | 2213-2929 |
卷号 | 9期号:6 |
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. |
关键词 | Cu+/g-C3N4 PMS Sunlight RhB Mechanism |
DOI | 10.1016/j.jece.2021.106596 |
收录类别 | SCIE |
语种 | 英语 |
WOS研究方向 | Engineering |
WOS类目 | Engineering, Environmental ; Engineering, Chemical |
WOS记录号 | WOS:000715057000006 |
出版者 | ELSEVIER SCI LTD |
来源库 | WOS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/150067 |
专题 | 石油化工学院 |
通讯作者 | Ren, Xuechang |
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 |
第一作者单位 | 兰州理工大学 |
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). |
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