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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
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
Volume6Issue:21Pages:7875-7884
Abstract

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.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c6cy01542e
Indexed BySCI
Language英语
WOS KeywordACTIVATED HYDROGEN-PEROXIDE ; SUPPORTED MANGANESE OXIDE ; OXYGEN REDUCTION REACTION ; CE-O COMPOSITES ; AQUEOUS-SOLUTIONS ; PHOTOCATALYTIC OXIDATION ; AROMATIC-COMPOUNDS ; WATER-TREATMENT ; SINGLET OXYGEN ; WASTE-WATER
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational 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 IDWOS:000386424200024
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21585
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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