中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 合肥物质科学研究院
  3. 中国科学院合肥物质科学研究院
  4. 中科院等离子体物理研究所
Mechanistic insights into the decontamination of Th(IV) on graphene oxide-based composites by EXAFS and modeling techniques

文献类型：期刊论文

作者Sun, Yubing1,2; Wang, Xiangxue1,3,4; Song, Wencheng2; Lu, Songhua1; Chen, Changlun1; Wang, Xiangke2,3,4,5
刊名ENVIRONMENTAL SCIENCE-NANO
出版日期2017
卷号4期号:1页码:222-232
DOI10.1039/c6en00470a
文献子类Article
英文摘要The sorption mechanism of Th(IV) on amidoxime/graphene oxide composites was investigated by extended X-ray absorption fine structure (EXAFS) spectra and surface complexation modeling. It was found that amidoxime/graphene oxide composites possessed a variety of oxygen-and nitrogen-containing functional groups such as hydroxyl, carboxyl, carbonyl, amine and imine groups. The sorption kinetics and sorption isotherms of Th(IV) on amidoxime/graphene oxide composites can be satisfactorily fitted by the pseudo-second- order kinetic model and the Langmuir model, respectively. The maximum sorption capacity of Th(IV) on amidoxime/graphene oxide composites calculated from the Langmuir model at pH 2.0 and 293 K was 123.46 mg g(-1). According to EXAFS analysis, the presence of a Th-C shell (R = 2.97 angstrom, CN = 4.9) indicated that inner-sphere surface complexation dominated the sorption of Th(IV) on amidoxime/graphene oxide composites at pH 2.0, whereas the occurrence of a Th-Th shell revealed that a surface precipitate dominated the sorption of Th(IV) on amidoxime/graphene oxide composites at pH 5.0. The pH-dependent sorption behaviors of Th(IV) on amidoxime/graphene oxide composites can be satisfactorily simulated by double layer modeling based on two inner-sphere surface complexes and a surface precipitate. These observations revealed that the amidoxime/graphene oxide composites can be regarded as a promising adsorbent to remove tetravalent radionuclides from aqueous solutions in environmental cleanup.
WOS关键词WALL CARBON NANOTUBES ; SURFACE COMPLEXATION MODEL ; AQUEOUS-SOLUTION ; IONIC-STRENGTH ; URANIUM(VI) ADSORPTION ; COLLOIDAL STABILITY ; EU(III) ADSORPTION ; HUMIC/FULVIC ACID ; BACILLUS-SUBTILIS ; SORPTION
WOS研究方向Chemistry ; Environmental Sciences & Ecology ; Science & Technology - Other Topics
语种英语
WOS记录号WOS:000394777000021
资助机构Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; 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 ; 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 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Natural Science Foundation of China(21477133 ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; 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 ; 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 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31735]  
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.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Anhui, Peoples R China
2.North China Elect Power Univ, Sch Environm & Chem Engn, Beijing 102206, Peoples R China
3.Soochow Univ, Sch Radiol & Interdisciplinary Sci, Suzhou 215123, Peoples R China
4.Collaborat Innovat Ctr Radiat Med Jiangsu Higher, Suzhou 215123, Peoples R China
5.King Abdulaziz Univ, Fac Sci, NAAM Res Grp, Jeddah 21589, Saudi Arabia
推荐引用方式
GB/T 7714		 Sun, Yubing,Wang, Xiangxue,Song, Wencheng,et al. Mechanistic insights into the decontamination of Th(IV) on graphene oxide-based composites by EXAFS and modeling techniques[J]. ENVIRONMENTAL SCIENCE-NANO,2017,4(1):222-232.
APA Sun, Yubing,Wang, Xiangxue,Song, Wencheng,Lu, Songhua,Chen, Changlun,&Wang, Xiangke.(2017).Mechanistic insights into the decontamination of Th(IV) on graphene oxide-based composites by EXAFS and modeling techniques.ENVIRONMENTAL SCIENCE-NANO,4(1),222-232.
MLA Sun, Yubing,et al."Mechanistic insights into the decontamination of Th(IV) on graphene oxide-based composites by EXAFS and modeling techniques".ENVIRONMENTAL SCIENCE-NANO 4.1(2017):222-232.

入库方式： OAI收割

来源：合肥物质科学研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。