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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
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume8Issue:15Pages:9710-9720
AbstractNanocarbons 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.
KeywordCatalytic Ozonation Reduced Graphene Oxide Surface Carbonyl Groups P-hydroxylbenzoic Acid Superoxide Radical
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acsami.6b01175
Indexed BySCI
Language英语
WOS KeywordWALLED CARBON NANOTUBES ; SINGLET OXYGEN ; HYDROGEN-PEROXIDE ; OXALIC-ACID ; HETEROGENEOUS CATALYSIS ; ENHANCED OZONATION ; WATER-TREATMENT ; ARMCHAIR EDGES ; WASTE-WATER ; OXIDATION
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(21207133) ; National Science Fund for Distinguished Young Scholars of China(51425405)
WOS IDWOS:000374812000020
Citation statistics
Cited Times:65[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21024
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.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
Recommended Citation
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.
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