Efficient Catalytic Ozonation over Reduced Graphene Oxide for p-Hydroxylbenzoic Acid (PHBA) Destruction: Active Site and Mechanism
Wang, Yuxian1,2; Xie, Yongbing1; Sun, Hongqi2; Xiao, Jiadong1,3; Cao, Hongbin1; Wang, Shaobin2
2016-04-20
发表期刊ACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
卷号8期号:15页码:9710-9720
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.
关键词Catalytic Ozonation Reduced Graphene Oxide Surface Carbonyl Groups P-hydroxylbenzoic Acid Superoxide Radical
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1021/acsami.6b01175
收录类别SCI
语种英语
关键词[WOS]WALLED CARBON NANOTUBES ; SINGLET OXYGEN ; HYDROGEN-PEROXIDE ; OXALIC-ACID ; HETEROGENEOUS CATALYSIS ; ENHANCED OZONATION ; WATER-TREATMENT ; ARMCHAIR EDGES ; WASTE-WATER ; OXIDATION
WOS研究方向Science & Technology - Other Topics ; Materials Science
WOS类目Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
项目资助者National Natural Science Foundation of China(21207133) ; National Science Fund for Distinguished Young Scholars of China(51425405)
WOS记录号WOS:000374812000020
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被引频次:46[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/122111/21024
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, 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
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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.
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