The influence of the substituent on the phenol oxidation rate and reactive species in cubic MnO2 catalytic ozonation
Nawaz, Faheem1,2; Xie, Yongbing1; Xiao, Jiadong1,2; Cao, Hongbin1; Ghazi, Zahid Ali2; Guo, Zhuang1,2; Chen, Yue1
2016
发表期刊CATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
卷号6期号:21页码:7875-7884
摘要

Shape-controlled MnO2, Mn2O3 and Mn3O4 were prepared and applied in catalytic ozonation of phenol (Ph), p-cresol (Ph-CH3) and p-chlorophenol (Ph-Cl). Their textural properties were characterized by XRD, SEM, TEM, nitrogen physical adsorption and CV. MnO2 was found to be more active than Mn2O3 and Mn3O4 for its higher electron transfer ability and higher amount of oxygen defects or surface hydroxyl groups. The degradation order was Ph-Cl > Ph-CH3 > Ph in the mixed solution, while the trend became Ph-CH3 > Ph-Cl > Ph in the single component solution, indicating that an electron donating group (EDG) and an electron withdrawing group (EWG) both benefit phenol degradation. The co-existing phenol had a different effect on the degradation of the other in the ozonation and catalytic ozonation of the mixed solution, but their influence on each other was universally opposite. Superoxide radical, singlet oxygen and molecular ozone were mainly responsible for phenol degradation in bulk solution. The contribution of ozone and singlet oxygen to the phenol degradation follows the order Ph-CH3 > Ph > Ph-Cl, indicating an electrophilic attack reaction, while the trend is opposite for superoxide radical oxidation, possibly due to a nucleophilic reaction pattern.

文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1039/c6cy01542e
收录类别SCI
语种英语
关键词[WOS]ACTIVATED HYDROGEN-PEROXIDE ; SUPPORTED MANGANESE OXIDE ; OXYGEN REDUCTION REACTION ; CE-O COMPOSITES ; AQUEOUS-SOLUTIONS ; PHOTOCATALYTIC OXIDATION ; AROMATIC-COMPOUNDS ; WATER-TREATMENT ; SINGLET OXYGEN ; WASTE-WATER
WOS研究方向Chemistry
WOS类目Chemistry, Physical
项目资助者National Science Fund for Distinguished Young Scholars(51425405) ; National Natural Science Foundation of China(21207133) ; Major Science and Technology Program for Water Pollution Control and Treatment(2015ZX07202-013)
WOS记录号WOS:000386424200024
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21585
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Div Environm Engn & Technol, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Nawaz, Faheem,Xie, Yongbing,Xiao, Jiadong,et al. The influence of the substituent on the phenol oxidation rate and reactive species in cubic MnO2 catalytic ozonation[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(21):7875-7884.
APA Nawaz, Faheem.,Xie, Yongbing.,Xiao, Jiadong.,Cao, Hongbin.,Ghazi, Zahid Ali.,...&Chen, Yue.(2016).The influence of the substituent on the phenol oxidation rate and reactive species in cubic MnO2 catalytic ozonation.CATALYSIS SCIENCE & TECHNOLOGY,6(21),7875-7884.
MLA Nawaz, Faheem,et al."The influence of the substituent on the phenol oxidation rate and reactive species in cubic MnO2 catalytic ozonation".CATALYSIS SCIENCE & TECHNOLOGY 6.21(2016):7875-7884.
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