Design of Environmental-Friendly Carbon-Based Catalysts for Efficient Advanced Oxidation Processes

被引:2
作者
Xu, Xinru [1 ,2 ]
Kuang, Guochen [1 ,2 ]
Jiang, Xiao [1 ,2 ]
Wei, Shuoming [1 ,2 ]
Wang, Haiyuan [3 ]
Zhang, Zhen [1 ,2 ]
机构
[1] Tianjin Univ, Minist Educ, Key Lab Organ Integrated Circuit, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Sch Sci, Dept Chem, Tianjin Key Lab Mol Optoelect Sci, Tianjin 300072, Peoples R China
[3] Tianjin Univ, Natl Demonstrat Ctr Chem & Chem Engn Educ, Tianjin 300350, Peoples R China
基金
中国国家自然科学基金;
关键词
advanced oxidation processes; rhodamine B; peroxymonosulfate; O-1(2); PEROXYMONOSULFATE; DEGRADATION; ACTIVATION; SHELL;
D O I
10.3390/ma17112750
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Advanced oxidation processes (AOPs) represent one of the most promising strategies to generate highly reactive species to deal with organic dye-contaminated water. However, developing green and cost-effective catalysts is still a long-term goal for the wide practical application of AOPs. Herein, we demonstrated doping cobalt in porous carbon to efficiently catalyze the oxidation of the typically persistent organic pollutant rhodamine B, via multiple reactive species through the activation of peroxymonosulfate (PMS). The catalysts were prepared by facile pyrolysis of nanocomposites with a core of cobalt-loaded silica and a shell of phenolic resin (Co-C/SiO2). It showed that the produced O-1(2) could effectively attack the electron-rich functional groups in rhodamine B, promoting its molecular chain breakage and accelerating its oxidative degradation reaction with reactive oxygen-containing radicals. The optimized Co-C/SiO2 catalyst exhibits impressive catalytic performance, with a degradation rate of rhodamine B up to 96.7% in 14 min and a reaction rate constant (k) as high as 0.2271 min(-1), which suggested promising potential for its practical application.
引用
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页数:13
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