Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism

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	Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism
	Wang, Yuxian 1,2; Xie, Yongbing 1; Sun, Hongqi 2; Xiao, Jiadong 1,3; Cao, Hongbin 1; Wang, Shaobin 2
刊名	ACS APPLIED MATERIALS & INTERFACES
	2016-04-20
卷号	8 期号:15 页码:9710-9720
关键词	catalytic ozonation reduced graphene oxide surface carbonyl groups p-hydroxylbenzoic acid superoxide radical
ISSN号	1944-8244
英文摘要	Nanocarbons have been demonstrated as promising environmentally benign catalysts for advanced oxidation processes (AOPs) upgrading metal-based materials. In this study, reduced graphene oxide (rGO) with a low level of structural defects was synthesized via a scalable method for catalytic ozonation of p-hydroxylbenzoic acid (PHBA). Metal free rGO materials were found to exhibit a superior activity in activating ozone for catalytic oxidation of organic phenolics. The electron-rich carbonyl groups were identified as the active sites for the catalytic reaction. Electron spin resonance (ESR) and radical competition tests revealed that superoxide radical (O-center dot(2)-) and singlet oxygen (O-1(2)) were the reactive oxygen species (ROS) for PHBA degradation. The intermediates and the degradation pathways were illustrated from mass spectroscopy. It was interesting to observe that addition of NaCI could enhance both ozonation and catalytic ozonation efficiencies and make O-center dot(2)- as the dominant ROS. Stability of the catalysts was also evaluated by the successive tests. Loss of specific surface area and changes in the surface chemistry were suggested to be responsible for catalyst deactivation.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]	Science & Technology - Other Topics ; Materials Science
关键词[WOS]	WALLED CARBON NANOTUBES ; SINGLET OXYGEN ; HYDROGEN-PEROXIDE ; OXALIC-ACID ; HETEROGENEOUS CATALYSIS ; ENHANCED OZONATION ; WATER-TREATMENT ; ARMCHAIR EDGES ; WASTE-WATER ; OXIDATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000374812000020
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/21024]
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, Inst Proc Engn, Beijing Engn Res Ctr Proc Pollut Control, Div Environm Technol & Engn, Beijing 100190, Peoples R China 2.Curtin Univ, Dept Chem Engn, GPO Box U1987, Perth, WA 6845, Australia 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yuxian,Xie, Yongbing,Sun, Hongqi,et al. Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(15):9710-9720.
APA	Wang, Yuxian,Xie, Yongbing,Sun, Hongqi,Xiao, Jiadong,Cao, Hongbin,&Wang, Shaobin.(2016).Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism.ACS APPLIED MATERIALS & INTERFACES,8(15),9710-9720.
MLA	Wang, Yuxian,et al."Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism".ACS APPLIED MATERIALS & INTERFACES 8.15(2016):9710-9720.