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Hierarchical shape-controlled mixed-valence calcium manganites for catalytic ozonation of aqueous phenolic compounds
Wang, Yuxian1,2; Xie, Yongbing1; Sun, Hongqi2; Xiao, Jiadong1; Cao, Hongbin1; Wang, Shaobin2
2016
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
Volume6Issue:9Pages:2918-2929
AbstractCatalytic ozonation has attracted intensive attention due to its efficient degradation of various organic pollutants in water. The key to a practical application is the discovery of highly effective catalysts. This study, for the first time, reports excellent performances of porous mixed-valence calcium manganite (CaMn3O6 and CaMn4O8) microspheres made of 1D nanorods in the catalytic ozonation of 4-nitrophenol. The CaMn3O6 and CaMn4O8 showed much higher activities and stabilities than manganese oxides. From a variety of advanced characterizations, the mechanism of surface catalysis was discussed in detail. Quenching reagents and electron paramagnetic resonance (EPR) spectroscopy were applied to probe the dominant reactive species in the catalytic ozonation over the calcium manganites. It was found that superoxide radicals and singlet oxygen rather than hydroxyl radicals contributed to the degradation and mineralization of 4-nitrophenol. Moreover, the effects of electron-withdrawing groups (EWG) and electron-donating groups (EDG) in the phenolic compounds on the ozonation/catalytic ozonation over the calcium manganites were investigated using phenol, p-cresol and p-chlorophenol as target pollutants.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c5cy01967b
Indexed BySCI
Language英语
WOS KeywordSUPPORTED MANGANESE OXIDE ; DISSOCIATING ORGANIC-COMPOUNDS ; P-NITROPHENOL DEGRADATION ; REDUCED GRAPHENE OXIDE ; SINGLET OXYGEN ; OZONE DECOMPOSITION ; HYDROGEN-PEROXIDE ; HYDROXYL RADICALS ; ACTIVATED CARBON ; RATE CONSTANTS
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational Natural Science Foundation of China(21207133) ; National Science Fund for Distinguished Young Scholars of China(51425405)
WOS IDWOS:000375545600008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21070
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, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Curtin Univ, Dept Chem Engn, U1987, Perth, WA 6845, Australia
Recommended Citation
GB/T 7714
Wang, Yuxian,Xie, Yongbing,Sun, Hongqi,et al. Hierarchical shape-controlled mixed-valence calcium manganites for catalytic ozonation of aqueous phenolic compounds[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(9):2918-2929.
APA Wang, Yuxian,Xie, Yongbing,Sun, Hongqi,Xiao, Jiadong,Cao, Hongbin,&Wang, Shaobin.(2016).Hierarchical shape-controlled mixed-valence calcium manganites for catalytic ozonation of aqueous phenolic compounds.CATALYSIS SCIENCE & TECHNOLOGY,6(9),2918-2929.
MLA Wang, Yuxian,et al."Hierarchical shape-controlled mixed-valence calcium manganites for catalytic ozonation of aqueous phenolic compounds".CATALYSIS SCIENCE & TECHNOLOGY 6.9(2016):2918-2929.
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