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High sorption of U(VI) on graphene oxides studied by batch experimental and theoretical calculations

文献类型：期刊论文

作者Wang, Xiangxue1; Fan, Qiaohui2; Yu, Shujun1; Chen, Zhongshan1; Ai, Yuejie1; Sun, Yubing3,4; Hobiny, Aatef5; Alsaedi, Ahmed5; Wang, Xiangke1,3,5
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2016-03-01
卷号287期号:无页码:448-455
关键词Graphene Oxides u(Vi) Surface Complexation Dft Calculation
DOI10.1016/j.cej.2015.11.066
文献子类Article
英文摘要The graphene oxides (GOs) have been studied extensively in multidisciplinary areas owing to their excellent physicochemical properties. The high theoretical surface areas and large amounts of oxygen containing functional groups at the basal planes and the edge sites ensure their high sorption capacity for heavy metal ions and radionuclides from large volumes of aqueous solutions. Herein, the GOs were applied as adsorbents to remove U(VI) from aqueous solutions at different experimental conditions, and the results showed that the sorption of U(VI) on GOs was strongly dependent on pH and was not affected by ionic strength obviously. The sorption capacity of U(VI) on GOs is calculated to be 1330 mg/g at pH 4.5 and T = 20 degrees C, which is much higher than any other today's materials. The interaction mechanism of U(VI) on GOs was simulated by the computational DFT calculations; and the results evidenced that the variation in pH values led to significant changes in the circumstance of functional groups on GOs. As the pH value increased, the weak physical sorption/outer-sphere surface complexation between the GOs and U(VI) at low pH turned into strong chemical sorption/inner-sphere surface complexation with the negative charged -O- or -COO- groups induced by the deprotonation of the functional groups at high pH. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词DENSITY-FUNCTIONAL THERMOCHEMISTRY ; MULTIWALLED CARBON NANOTUBES ; AQUEOUS-SOLUTIONS ; MODELING TECHNIQUES ; GRAPHITE OXIDE ; EFFICIENT ENRICHMENT ; EXACT-EXCHANGE ; REMOVAL ; NANOSHEETS ; ADSORPTION
WOS研究方向Engineering
语种英语
WOS记录号WOS:000369461800049
资助机构Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; Deanship of Scientific Research (DSR), King Abdulaziz University(41-130-36-HiCi) ; 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源URL[http://ir.hfcas.ac.cn:8080/handle/334002/21784]  
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.North China Elect Power Univ, Sch Chem & Environm, Beijing 102206, Peoples R China
2.Chinese Acad Sci, Key Lab Petr Resources Gansu Prov, Key Lab Petr Resources Res, Inst Geol & Geophys, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Inst Plasma Phys, Key Lab New Thin Film Solar Cells, POB 1126, Hefei 230031, Anhui, Peoples R China
4.Jiangsu Higher Educ Inst, Collaborat Innovat Ctr Radiat Med, Nanjing, Peoples R China
5.King Abdulaziz Univ, NAAM Res Grp, Fac Sci, Jeddah 21589, Saudi Arabia
推荐引用方式
GB/T 7714		 Wang, Xiangxue,Fan, Qiaohui,Yu, Shujun,et al. High sorption of U(VI) on graphene oxides studied by batch experimental and theoretical calculations[J]. CHEMICAL ENGINEERING JOURNAL,2016,287(无):448-455.
APA Wang, Xiangxue.,Fan, Qiaohui.,Yu, Shujun.,Chen, Zhongshan.,Ai, Yuejie.,...&Wang, Xiangke.(2016).High sorption of U(VI) on graphene oxides studied by batch experimental and theoretical calculations.CHEMICAL ENGINEERING JOURNAL,287(无),448-455.
MLA Wang, Xiangxue,et al."High sorption of U(VI) on graphene oxides studied by batch experimental and theoretical calculations".CHEMICAL ENGINEERING JOURNAL 287.无(2016):448-455.

入库方式： OAI收割

来源：合肥物质科学研究院

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