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Interaction of Th(IV) with graphene oxides: Batch experiments, XPS investigation, and modeling

文献类型：期刊论文

作者Xu, Huan1,2; Li, Guang1,3; Li, Jie2; Chen, Changlun2; Ren, Xuemei2
刊名JOURNAL OF MOLECULAR LIQUIDS
出版日期2016
卷号213期号:无页码:58-68
关键词Thorium(Iv) Graphene Oxides Sorption Desorption Dlm
DOI10.1016/j.molliq.2015.11.022
文献子类Article
英文摘要The high surface area, the pH-dependent highly negative charge, and the abundant surface functional groups make graphene oxides (GOs) efficient for cation immobilization. In this study, the performance of GOs in Th(IV) immobilization as a function of contact time, pH, ionic strength, GO concentration, humic add (HA) and temperature was investigated by batch experiments. The sorption data of pH effect at different ionic strengths and HA concentrations were fitted by diffusion layer model (DLM). The results showed that the whole sorption process was dependent on pH and independent of ionic strength, suggesting that surface complexation was the dominant sorption mechanism over ionic exchange. Ionic strength did not affect the macroscopic sorption of Th(IV) on GOs but did influence the microscopic distribution of the adsorbed Th(IV) species on GOs. The strong acidic groups played a dominant role in Th(IV) sorption on GOs. The adsorbed Th(IV) mainly presented as EXOHTh4+ and EXOTh(OH) (2+) on GO surfaces. XPS analysis further provided evidence that the oxygen-containing functional groups on GO surfaces participated in the sorption of Th(IV). HA enhanced the sorption of Th(IV) on GOs mainly by the increase of the stability of GOs rather than the increase in the negative surface charge of GOs or the formation of Th(IV)-HA-GO surface complexes. Based on the Langmuir isotherm model, the maximum sorption capacity of GOs was 252.5 mu mol/g, which is higher than those of the common sorbents. This work highlights the possible application of GOs in Th(IV) contamination management. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词MULTIWALLED CARBON NANOTUBES ; NATURAL ORGANIC-MATTER ; AQUEOUS-SOLUTIONS ; IONIC-STRENGTH ; FULVIC-ACID ; HUMIC-ACID ; NA-MONTMORILLONITE ; ACTIVATED CARBON ; FOREIGN IONS ; U(VI) IONS
WOS研究方向Chemistry ; Physics
语种英语
WOS记录号WOS:000369462300010
资助机构NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; NSFC(21307135 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 41273134 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21377132 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 21477133 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 91326202 ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730) ; 21225730)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/21801]  
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.Anhui Univ, Sch Phys & Mat Sci, Hefei 230601, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Peoples R China
3.Anhui Key Lab Informat Mat & Devices, Hefei 230601, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Huan,Li, Guang,Li, Jie,et al. Interaction of Th(IV) with graphene oxides: Batch experiments, XPS investigation, and modeling[J]. JOURNAL OF MOLECULAR LIQUIDS,2016,213(无):58-68.
APA Xu, Huan,Li, Guang,Li, Jie,Chen, Changlun,&Ren, Xuemei.(2016).Interaction of Th(IV) with graphene oxides: Batch experiments, XPS investigation, and modeling.JOURNAL OF MOLECULAR LIQUIDS,213(无),58-68.
MLA Xu, Huan,et al."Interaction of Th(IV) with graphene oxides: Batch experiments, XPS investigation, and modeling".JOURNAL OF MOLECULAR LIQUIDS 213.无(2016):58-68.

入库方式： OAI收割

来源：合肥物质科学研究院

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