One-step synthesis of a heterogeneous catalyst: Cu+-decorated triazine-based g-C3N4 nanosheet formation and catalytic mechanism

doi:10.1016/j.jece.2021.105558

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	One-step synthesis of a heterogeneous catalyst: Cu+-decorated triazine-based g-C3N4 nanosheet formation and catalytic mechanism
	Yang, Linhai 1,2; Ren, Xuechang 1; Zhang, Yujie 1; Chen, Zuoyan 1; Wan, Jianxin 1
刊名	JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
	2021-08
卷号	9 期号:4
关键词	Cu+/g-C3N4 Fenton-like reaction Nanosheet Wastewater treatment Mechanism
DOI	10.1016/j.jece.2021.105558
英文摘要	Classical Fe-based Fenton catalysts have limited applications due to many disadvantages. Herein, Cu+/g-C3N4 catalysts were successfully prepared by a one-step thermal polymerization method. The physicochemical of g-C3N4 and Cu+/g-C3N4 were characterized by XRD, SEM, FTIR, XPS and BET. The best performance of Cu+/g-C3N4(1:4) catalyst can be obtained when the doping molar ratio of CuSO4 center dot 5H(2)O to melamine is 1:4, which appeared as flakes with abundant mesopores and the BET specific surface area is increased 2.5 times of pure g-C3N4. Such unique structures were constructed by embedding Cu+ in triazine-based g-C3N4 nanosheets and forming Cu-N coordination bonds. The Cu+/g-C3N4(1:4) samples also exhibited the greatest Fenton-like catalytic performance under neutral conditions when the dosage of catalyst and H2O2 were 0.5 g/L and 25 mmol/L, respectively, the degradation of RhB reached 92.9% in 10 min. Moreover, the high catalytic activity of this catalyst can be achieved at different initial pH in range of 5.0-12.0, especially in a strong alkaline environment. The investigation of the working mechanisms of the catalyst suggested that the Cu atom and g-C3N4 were dual active sites, the degradation of pollutants mainly depends on center dot OH radicals and other active species produced by it. A benefit of the unique structure was limited Cu leaching, which prevented secondary environmental pollution. This strategy has resulted in substantial progress in overcoming the drawbacks of traditional Fe-based Fenton catalysts and has shown great potential for applications in the field of wastewater treatment.
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000670386400002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148775]
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. One-step synthesis of a heterogeneous catalyst: Cu+-decorated triazine-based g-C3N4 nanosheet formation and catalytic mechanism[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2021,9(4).
APA	Yang, Linhai,Ren, Xuechang,Zhang, Yujie,Chen, Zuoyan,&Wan, Jianxin.(2021).One-step synthesis of a heterogeneous catalyst: Cu+-decorated triazine-based g-C3N4 nanosheet formation and catalytic mechanism.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,9(4).
MLA	Yang, Linhai,et al."One-step synthesis of a heterogeneous catalyst: Cu+-decorated triazine-based g-C3N4 nanosheet formation and catalytic mechanism".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 9.4(2021).