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New Synthesis of nZVI/C Composites as an Efficient Adsorbent for the Uptake of U(VI) from Aqueous Solutions

文献类型：期刊论文

作者Liu, Haibo1; Li, Mengxue1; Chen, Tianhu1; Chen, Changlun2,3; Alharb, Njud S.3; Hayat, Tasawar4; Chen, Dong1; Zhang, Qiang1; Sun, Yubing2,5
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY
出版日期2017-08-15
卷号51期号:16页码:9227-9234
DOI10.1021/acs.est.7b02431
文献子类Article
英文摘要New nanoscale zerovalent iron/carbon (nZVI/C) composites were successfully prepared via heating natural hematite and pine sawdust at 800 degrees C under nitrogen conditions. Characterization by SEM, XRD, FTIR, and XPS analyses indicated that the as-prepared nZVI/C composites contained a large number of reactive sites. The lack of influence of the ionic strength revealed inner-sphere complexation dominated U(VI) uptake by the nZVI/C composites. Simultaneous adsorption and reduction were involved in the uptake process of U(VI) according to the results of XPS and XANES analyses. The presence of U-C/U-U shells demonstrated that innersphere complexation and surface coprecipitation dominated the U(VI) uptake at low and high pH conditions, respectively. The uptake behaviors of U(VI) by the nZVI/C composites were fitted well by surface complexation modeling with two weak and two strong sites. The maximum uptake capacity of U(VI) by the nZVI/C composites was 186.92 mg/g at pH 4.0 and 328 K. Additionally, the nZVI/C composites presented good recydability and recoverability for U(VI) uptake in regeneration experiments. These observations indicated that the nZVI/C composites can be considered as potential adsorbents to remove radionuclides for environmental remediation.
WOS关键词ZERO-VALENT IRON ; NANOSCALE ZEROVALENT IRON ; GRAPHENE OXIDE ; MODELING TECHNIQUES ; CARBONACEOUS NANOFIBERS ; X-RAY ; SIMULTANEOUS ADSORPTION ; COMPETITIVE SORPTION ; EFFECTIVE REMOVAL ; WATER INTERFACE
WOS研究方向Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000407987400038
资助机构Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; 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源URL[http://ir.hfcas.ac.cn:8080/handle/334002/33642]  
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.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
3.King Abdulaziz Univ, Dept Biol Sci, Fac Sci, Jeddah 21589, Saudi Arabia
4.Kind Abdulaziz Univ, NAAM Res Grp, Jeddah 21589, Saudi Arabia
5.Soochow Univ, Sch Radiol & Interdisciplinary Sci, Suzhou 215123, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Haibo,Li, Mengxue,Chen, Tianhu,et al. New Synthesis of nZVI/C Composites as an Efficient Adsorbent for the Uptake of U(VI) from Aqueous Solutions[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(16):9227-9234.
APA Liu, Haibo.,Li, Mengxue.,Chen, Tianhu.,Chen, Changlun.,Alharb, Njud S..,...&Sun, Yubing.(2017).New Synthesis of nZVI/C Composites as an Efficient Adsorbent for the Uptake of U(VI) from Aqueous Solutions.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(16),9227-9234.
MLA Liu, Haibo,et al."New Synthesis of nZVI/C Composites as an Efficient Adsorbent for the Uptake of U(VI) from Aqueous Solutions".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.16(2017):9227-9234.

入库方式： OAI收割

来源：合肥物质科学研究院

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