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  4. 中科院固体物理研究所
Mechanisms of Sb(III) oxidation mediated by low molecular weight phenolic acids

文献类型：期刊论文

作者Wu, Tong-liang1,4; Qin, Wen-xiu3; Alves, Marcelo Eduardo2; Fang, Guo-Dong1; Sun, Qian1,4; Cui, Pei-xin1; Liu, Cun1; Zhou, Dong-mei1; Wang, Yu-jun1
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2019-01-15
卷号356页码:190-198
关键词Sb Oxidation Free radical Reactive oxygen species Natural organic matter
ISSN号1385-8947
DOI10.1016/j.cej.2018.09.008
通讯作者Wang, Yu-jun(yjwang@issas.ac.cn)
英文摘要Quinone-like moieties are active components of natural organic matter (NOM), whose redox reactions may exert substantial influence on the behavior of trace metals in natural waters. The interactions between NOM and antimony (Sb) influence the mobility and toxicity of Sb, but the mechanism of this process is poorly understood. In this study, batch oxidation experiments were conducted to evaluate the effects of model quinone-like moieties, i.e., 1,4-hydroquinone and low molecular weight phenolic acids (LMWPAs), including gallic acid, caffeic acid, and protocatechuic acid, on the oxidation of Sb(III) in the absence of light. The results indicated that Sb(III) was rapidly oxidized to Sb(V) in the presence of different phenolic acids in neutral and alkaline conditions. The oxidative reactions were pH dependent and the Sb(III) oxidation rate constant (k(obs)) increased by one or two orders of magnitude when the pH shifted from 7.0 to 9.0. The combination of electron paramagnetic resonance and free radical quenching studies elucidated that reactive oxygen species (hydrogen peroxide) and quinone species (the semiquinone radical and oxidized forms of LMWPAs) were the main contributors to the Sb(III) oxidation. According to density functional theory based calculations, the bond dissociation enthalpy of the phenolic hydroxyl group is well correlated with kobs, which is in line with its pro-oxidant property towards Sb (III) through the production of semiquinone radical. The findings of this study provided new insights into the mechanism of the oxidation of Sb(III) by NOM.
WOS关键词DISSOLVED ORGANIC-MATTER ; HYDROGEN-PEROXIDE ; ANTIOXIDANT ACTIVITY ; HYDROXYL RADICALS ; AQUEOUS-SOLUTION ; HUMIC-ACID ; PHOTOINDUCED OXIDATION ; SUPEROXIDE-DISMUTASE ; CONTAMINATED SOILS ; VITAMIN-E
资助项目National Key Research and Development Program of China, China[2016YFD0800407] ; National Natural Science Foundation of China, China[41771276] ; National Natural Science Foundation of China, China[41422105] ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China[2011226]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000447004100020
出版者ELSEVIER SCIENCE SA
资助机构National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Key Research and Development Program of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; National Natural Science Foundation of China, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/39345]  
专题合肥物质科学研究院_中科院固体物理研究所
通讯作者Wang, Yu-jun
作者单位1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China
2.Luiz de Queiroz Agr Coll ESALQ USP, Dept Exact Sci, BR-13418900 Piracicaba, SP, Brazil
3.Chinese Acad Sci, Ctr Environm & Energy Nanomat, Inst Solid State Phys, Key Lab Mat Phys,Anhui Key Lab Nanomat & Nanotech, Hefei 230031, Anhui, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Tong-liang,Qin, Wen-xiu,Alves, Marcelo Eduardo,et al. Mechanisms of Sb(III) oxidation mediated by low molecular weight phenolic acids[J]. CHEMICAL ENGINEERING JOURNAL,2019,356:190-198.
APA Wu, Tong-liang.,Qin, Wen-xiu.,Alves, Marcelo Eduardo.,Fang, Guo-Dong.,Sun, Qian.,...&Wang, Yu-jun.(2019).Mechanisms of Sb(III) oxidation mediated by low molecular weight phenolic acids.CHEMICAL ENGINEERING JOURNAL,356,190-198.
MLA Wu, Tong-liang,et al."Mechanisms of Sb(III) oxidation mediated by low molecular weight phenolic acids".CHEMICAL ENGINEERING JOURNAL 356(2019):190-198.

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来源：合肥物质科学研究院

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