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Efficient light-free activation of peroxymonosulfate by carbon ring conjugated carbon nitride for elimination of organic pollutants
Chen, Zhenhuan; Li, Tong; Zhu, Yue; Liang, Xiaoying; Zhao, Zhiyu; Wang, Di; Li, Junhao; Gao, Yaowen; Hu, Chun
2021-09-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume420Pages:-
AbstractRealizing graphitic carbon nitride (g-C3N4) being active in light-free heterogeneous catalysis remains a big challenge as a result of its inertness if not irradiated. Herein, we demonstrate the successful construction of gC(3)N(4)-based in-plane heterostructure by intimately connecting g-C3N4 framework with carbon ring via strong pi-conjugated bonds, which regulates the electron density distribution of the g-C3N4 composite. The optimized carbon ring conjugated carbon nitride (CCN0.1) with porous architecture and modulated electronic structure delivers admirable catalytic performance in peroxymonosulfate (PMS) activation without the need of light, with its specific activity being significantly superior to nonmetal-doped g-C3N4 and comparable to part of active nitrogen-doped carbon materials. Experimental data and theoretical results revealed the two domains of g-C3N4 with higher electron density and the conjugated carbon ring with lower electron density in CCN0.1 involve in PMS conversion accounting for PMS reduction and oxidation, respectively, which simultaneously facilitates dissolved oxygen reduction over the g-C3N4 field. Moreover, CCN0.1 shows robust stability in PMS activation, and meanwhile, the CCN0.1 /PMS system exhibits potential effectiveness in actual industrial wastewater remediation. This work expands the range of nonmetallic g-C3N4-based materials for light-free activation of persulfate and deepens the mechanistic understanding of persulfate conversion process for wider environmental applications.
Department中国科学院饮用水科学与技术重点实验室
KeywordCarbon nitride pi-Conjugation Light-free PMS activation PMS reduction and oxidation Actual industrial wastewater remediation
WOS Research AreaEngineering, Environmental ; Engineering, Chemical
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46199
Collection中国科学院饮用水科学与技术重点实验室
Affiliation1.Guangzhou Univ, Minist Educ, Key Lab Water Qual & Conservat Pearl River Delta, Inst Environm Res Greater Bay, Guangzhou 510006, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Chen, Zhenhuan,Li, Tong,Zhu, Yue,et al. Efficient light-free activation of peroxymonosulfate by carbon ring conjugated carbon nitride for elimination of organic pollutants[J]. CHEMICAL ENGINEERING JOURNAL,2021,420:-.
APA Chen, Zhenhuan.,Li, Tong.,Zhu, Yue.,Liang, Xiaoying.,Zhao, Zhiyu.,...&Hu, Chun.(2021).Efficient light-free activation of peroxymonosulfate by carbon ring conjugated carbon nitride for elimination of organic pollutants.CHEMICAL ENGINEERING JOURNAL,420,-.
MLA Chen, Zhenhuan,et al."Efficient light-free activation of peroxymonosulfate by carbon ring conjugated carbon nitride for elimination of organic pollutants".CHEMICAL ENGINEERING JOURNAL 420(2021):-.
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