Hierarchical shape-controlled mixed-valence calcium manganites for catalytic ozonation of aqueous phenolic compounds

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 湿法冶金清洁生产技术国家工程实验室

	Hierarchical shape-controlled mixed-valence calcium manganites for catalytic ozonation of aqueous phenolic compounds
	Wang, Yuxian 1,2; Xie, Yongbing 1; Sun, Hongqi 2; Xiao, Jiadong 1; Cao, Hongbin 1; Wang, Shaobin 2
刊名	CATALYSIS SCIENCE & TECHNOLOGY
	2016
卷号	6 期号:9 页码:2918-2929
ISSN号	2044-4753
英文摘要	Catalytic 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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	SUPPORTED MANGANESE OXIDE ; DISSOCIATING ORGANIC-COMPOUNDS ; P-NITROPHENOL DEGRADATION ; REDUCED GRAPHENE OXIDE ; SINGLET OXYGEN ; OZONE DECOMPOSITION ; HYDROGEN-PEROXIDE ; HYDROXYL RADICALS ; ACTIVATED CARBON ; RATE CONSTANTS
收录类别	SCI
语种	英语
WOS记录号	WOS:000375545600008
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/21070]
专题	过程工程研究所_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, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Curtin Univ, Dept Chem Engn, U1987, Perth, WA 6845, Australia
推荐引用方式 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.