文献类型：期刊文献

英文题名：Role of electronic properties in partition of radical and nonradical processes of carbocatalysis toward peroxymonosulfate activation

作者：Han, Chen[1];Duan, Xiaoguang[2];Zhang, Mingjie[1];Fu, Wenzhao[1];Duan, Xuezhi[1];Ma, Wenjie[3];Liu, Shaomin[3];Wang, Shaobin[2];Zhou, Xinggui[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia;[3]Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia

年份：2019

卷号：153

起止页码：73

外文期刊名：CARBON

收录：;EI(收录号：20192807161425);WOS:【SCI-EXPANDED(收录号:WOS:000485054200009)】；

基金：This work was supported by the Open Project of SKLOCE (SKL-ChE-16C05), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning and the Fundamental Research Funds for the Central Universities (222201718003).

语种：英文

外文关键词：Electronic properties - Redox reactions - Surface chemistry - Carbon nanotubes - Catalysis - Chemical activation

摘要：Nanocarbon-catalyzed advanced oxidation processes for wastewater remediation are green and state-of-the-art methods, nevertheless, the origins of carbocatalysis remain unresolved. In this study, carbon nanotubes (CNTs) are employed as typical metal-free catalysts for catalytic peroxymonosulfate (PMS) activation and phenol oxidation. The surface chemistry and electronic properties of CNTs are deliberately tailored by liquid acid oxidation and subsequent thermal treatment. It is unveiled that the electron-rich carbon surface and carbonyl groups can affect organic adsorption capacity of the carbocatalysts and modulate persulfate activation in different catalytic manners. Furthermore, the relationship between the surface chemistry (oxygen functionality and electron density) and carbocatalysis is established, which is decisive to regulate the radical/nonradical pathways in the catalytic oxidation for water purification. This study provides new insights to carbon-catalyzed persulfate activation with manipulated reaction pathways and redox potentials. (C) 2019 Elsevier Ltd. All rights reserved.