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Decontamination of Sr(II) on Magnetic Polyaniline/Graphene Oxide Composites: Evidence from Experimental, Spectroscopic, and Modeling Investigation

文献类型：期刊论文

作者Hu, Baowei1; Qu, Muqing1; Hu, Qingyuan1; Sun, Yubing2; Sheng, Guodong1; Hu, Jun3; Ma, Jingyuan4
刊名ACS SUSTAINABLE CHEMISTRY & ENGINEERING
出版日期2017-08-01
卷号5期号:8页码:6924-6931
关键词Sr(Ii) Magnetic Graphene Oxide Polyaniline Exafs Modeling
DOI10.1021/acssuschemeng.7b01126
文献子类Article
英文摘要The interaction of Sr(II) on magnetic polyaniline/graphene oxide (PANI/GO) composites was elucidated by batch, EXAFS, and surface complexation modeling techniques. The batch experiments showed that decreased uptake of Sr(II) on magnetic PANI/GO composites was observed with increasing ionic strength at pH <5.0, whereas no effect of ionic strength on Sr(II) uptake was shown at pH >5.0. The maximum uptake capacity of magnetic PANI/GO composites derived from the Langmuir model at pH 3.0 and 293 K was 37.17 mg/g. The outer sphere surface complexation controlled the uptake of Sr(II) on magnetic PANI/GO composites at pH 3.0 due to the similarity to the EXAFS spectra of Sr2+ in aqueous solutions, but the Sr(II) uptake at pH 7.0 was inner sphere complexation owing to the occurrence of the Sr-C shell. According to the analysis of surface complexation modeling, uptake of Sr(II) on magnetic PANI/GO composites was well simulated using a diffuse layer model with an outer-sphere complex (SOHSr2+ species) and two inner sphere complexes (i.e., (SO)(2)Sr(OH)(-) and SOSr+ species). These findings are crucial for the potential application of magnetic nanomaterials as a promising candidate for the uptake of radionuclides for environmental remediation.
WOS关键词REDUCED GRAPHENE OXIDE ; RAY-ABSORPTION SPECTROSCOPY ; HUMIC SUBSTANCE INTERACTION ; NANOSCALE ZEROVALENT IRON ; LAYERED DOUBLE HYDROXIDE ; HYDROUS FERRIC-OXIDE ; AQUEOUS-SOLUTIONS ; COMBINED BATCH ; CARBONACEOUS NANOFIBERS ; ENHANCED SEQUESTRATION
WOS研究方向Chemistry ; Engineering
语种英语
WOS记录号WOS:000407410900062
资助机构Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; Natural Science Foundation of China(21207092 ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; 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源URL[http://ir.hfcas.ac.cn:8080/handle/334002/33653]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Shaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Key Lab New Thin Film Solar Cells, POB 1126, Hefei 230031, Anhui, Peoples R China
3.Dongguan Univ Technol, Sch Elect Engn, Dongguan 523808, Guangdong, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Appl Phys, SSRF, Shanghai 201204, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Baowei,Qu, Muqing,Hu, Qingyuan,et al. Decontamination of Sr(II) on Magnetic Polyaniline/Graphene Oxide Composites: Evidence from Experimental, Spectroscopic, and Modeling Investigation[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2017,5(8):6924-6931.
APA Hu, Baowei.,Qu, Muqing.,Hu, Qingyuan.,Sun, Yubing.,Sheng, Guodong.,...&Ma, Jingyuan.(2017).Decontamination of Sr(II) on Magnetic Polyaniline/Graphene Oxide Composites: Evidence from Experimental, Spectroscopic, and Modeling Investigation.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,5(8),6924-6931.
MLA Hu, Baowei,et al."Decontamination of Sr(II) on Magnetic Polyaniline/Graphene Oxide Composites: Evidence from Experimental, Spectroscopic, and Modeling Investigation".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 5.8(2017):6924-6931.

入库方式： OAI收割

来源：合肥物质科学研究院

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