Catalytic ozonation of phenol by magnetic Mn0.7Ce0.3Ox/CNT@Fe3C

被引：2
作者：
Wang, Jing [1 ]
Ma, Li [1 ]
Pan, Zhengwei [1 ]
Li, Tingyun [1 ]
机构：
[1] Bengbu Univ, Expt Ctr Environm Sci, Bengbu 233000, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2022年 / 9卷 / 12期
关键词：
catalytic ozonation; Mn-Ce bimetallic oxide; magnetic; phenol; mineralization; SURFACE HYDROXYL-GROUPS; DEGRADATION; EFFICIENT; MANGANESE; CARBON; PERFORMANCE; OZONE; ACID; SULFAMETHOXAZOLE; MECHANISM;
D O I：
10.1088/2053-1591/aca8ea
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A high-efficient and stable catalyst is highly desired to catalyze ozone for refractory organic pollutants removal. In this work, Mn-Ce bimetallic oxide loaded CNT@Fe3C (Mn0.7Ce0.3Ox/CNT@Fe3C) was synthesized with Mn0.7Ce0.3Ox as the active component and magnetic CNT@Fe3C as the support. The catalytic performance of Mn0.7Ce0.3Ox/CNT@Fe3C towards catalytic ozonation was evaluated. The TOC removal efficiency of phenol degradation after 45 min of reaction was 98%, which was 1.5 times and 1.8 times that of monometallic CeO2/CNT@Fe3C (65%) and MnxOy/CNT@Fe3C (54%), respectively. The synthesized-Mn0.7Ce0.3Ox/CNT@Fe3C possessed good reusability during five successive cycles and remained efficient over a wide range of pH 4.2-8.3. The results of EPR measurements and quenching experiments demonstrated that hydroxyl radicals (center dot OH) were the dominant reactive oxidation species (ROS) for phenol mineralization in the Mn0.7Ce0.3Ox/CNT@Fe3C/O-3 system. Moreover, the magnetic Mn0.7Ce0.3Ox/CNT@Fe3C is easily recovered and reused.
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页数：10
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共 34 条
[1]   Catalytic performance and an insight into the mechanism of CeO2 nanocrystals with different exposed facets in catalytic ozonation of p-nitrophenol [J].
Afzal, Shahzad ;
Quan, Xie ;
Lu, Sen .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 248 :526-537
[2]   The use of manganese dioxide as a heterogeneous catalyst for oxalic acid ozonation in aqueous solution [J].
Andreozzi, R ;
Insola, A ;
Caprio, V ;
Marotta, R ;
Tufano, V .
APPLIED CATALYSIS A-GENERAL, 1996, 138 (01) :75-81
[3]   Purification and structural annealing of multiwalled carbon nanotubes at graphitization temperatures [J].
Andrews, R ;
Jacques, D ;
Qian, D ;
Dickey, EC .
CARBON, 2001, 39 (11) :1681-1687
[4]   Magnetically Separable and Durable MnFe2O4 for Efficient Catalytic Ozonation of Organic Pollutants [J].
Chen, Jun ;
Wen, Weijie ;
Kong, Linjun ;
Tian, Shuanghong ;
Ding, Fuchuan ;
Xiong, Ya .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2014, 53 (15) :6297-6306
[5]   Catalytic ozonation for the degradation of acetylsalicylic acid in aqueous solution by magnetic CeO2 nanometer catalyst particles [J].
Dai, Qizhou ;
Wang, Jiayu ;
Yu, Jie ;
Chen, Jun ;
Chen, Jianmeng .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 144 :686-693
[6]   Simple hydrothermal preparation of α-, β-, and γ-MnO2 and phase sensitivity in catalytic ozonation [J].
Dong, Yuming ;
Li, Kun ;
Jiang, Pingping ;
Wang, Guangli ;
Miao, Hongyan ;
Zhang, Jingjing ;
Zhang, Chi .
RSC ADVANCES, 2014, 4 (74) :39167-39173
[7]   Cerium, manganese and cobalt oxides as catalysts for the ozonation of selected organic compounds [J].
Faria, P. C. C. ;
Monteiro, D. C. M. ;
Orfao, J. J. M. ;
Pereira, M. F. R. .
CHEMOSPHERE, 2009, 74 (06) :818-824
[8]   Sulfate Radical-Mediated Degradation of Sulfadiazine by CuFeO2 Rhombohedral Crystal-Catalyzed Peroxymonosulfate: Synergistic Effects and Mechanisms [J].
Feng, Yong ;
Wu, Deli ;
Deng, Yu ;
Zhang, Tong ;
Shih, Kaimin .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2016, 50 (06) :3119-3127
[9]   SPIN TRAPPING OF SUPEROXIDE AND HYDROXYL RADICAL - PRACTICAL ASPECTS [J].
FINKELSTEIN, E ;
ROSEN, GM ;
RAUCKMAN, EJ .
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS, 1980, 200 (01) :1-16
[10]   Highly dispersed ceria on activated carbon for the catalyzed ozonation of organic pollutants [J].
Goncalves, Alexandra ;
Silvestre-Albero, Joaquin ;
Ramos-Fernandez, Enrique V. ;
Carlos Serrano-Ruiz, Juan ;
Orfao, Jose J. M. ;
Sepulveda-Escribano, Antonio ;
Pereira, Manuel Fernando R. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2012, 113 :308-317
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