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Chloro-benquinone Modified on Graphene Oxide as Metal-free Catalyst: Strong Promotion of Hydroxyl Radical and Generation of Ultra-Small Graphene Oxide
Zhao, He1; Wang, Juehua1,2; Zhang, Di1; Dai, Qin1,2; Han, Qingzhen3; Du, Penghui1,2; Liu, Chenming1; Xie, Yongbing1; Zhang, Yi1; Cao, Hongbin1; Fan, Zhuangjun4
2017-03-28
发表期刊SCIENTIFIC REPORTS
ISSN2045-2322
卷号7
摘要

Carbon-based metal-free catalyst has attracted more and more attention. It is a big challenge to improve catalytic activity of metal-free catalyst for decomposition of H2O2 to produce hydroxyl radical (HO center dot). Here, we report chloro-benquinone (TCBQ) modified on graphene oxide (GO) as metal-free catalyst for strong promotion of HO center dot. By the incorporation of GO, the HO center dot production by H2O2 and TCBQ is significantly promoted. Based on density functional theory, TCBQ modified GO (GO-TCBQ) is more prone to be nucleophilic attacked by H2O2 to yield HO center dot via electron transfer acceleration. Furthermore, the generated HO center dot can cut GO nanosheets into uniform ultra-small graphene oxide (USGO) through the cleavage of epoxy and C-C bonds. Interestingly, the damaged GO and in situ formed GO fragments can further enhance decomposition of H2O2 to produce HO center dot. Different from other catalytic processes, the GO-TCBQ metal-free catalysis process can be enhanced by GO itself, producing more HO center dot, and uniform USGO also can be generated. Thus, the metal free catalysis will be considered a fabrication method for uniform USGO, and may be extended to other fields including detoxifying organic pollutants and the application as disinfectants.

文章类型Article
WOS标题词Science & Technology
DOI10.1038/srep42643
收录类别SCI
语种英语
关键词[WOS]Oxygen Reduction Reaction ; Nitrogen-doped Graphene ; Photo-fenton Reaction ; Quantum Dots ; Hydrogen-peroxide ; Halogenated Quinones ; Functional-groups ; Carbon ; Oxidation ; Mechanism
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
项目资助者National Natural Science Foundation of China(51378487 ; Youth Innovation Promotion Association, CAS(2014037) ; 51425405)
WOS记录号WOS:000397532600001
引用统计
被引频次:3[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/122111/22080
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
4.Harbin Engn Univ, Coll Mat Sci & Chem Engn, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin, Heilongjiang 150001, Peoples R China
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GB/T 7714
Zhao, He,Wang, Juehua,Zhang, Di,et al. Chloro-benquinone Modified on Graphene Oxide as Metal-free Catalyst: Strong Promotion of Hydroxyl Radical and Generation of Ultra-Small Graphene Oxide[J]. SCIENTIFIC REPORTS,2017,7.
APA Zhao, He.,Wang, Juehua.,Zhang, Di.,Dai, Qin.,Han, Qingzhen.,...&Fan, Zhuangjun.(2017).Chloro-benquinone Modified on Graphene Oxide as Metal-free Catalyst: Strong Promotion of Hydroxyl Radical and Generation of Ultra-Small Graphene Oxide.SCIENTIFIC REPORTS,7.
MLA Zhao, He,et al."Chloro-benquinone Modified on Graphene Oxide as Metal-free Catalyst: Strong Promotion of Hydroxyl Radical and Generation of Ultra-Small Graphene Oxide".SCIENTIFIC REPORTS 7(2017).
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