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Preparation of graphene oxide-manganese dioxide for highly efficient adsorption and separation of Th(IV)/U(VI)
Pan N.1; Li L.1; Ding J.1; Li S.3; Wang R.3; Jin Y.1; Wang X.2; Xia C.1
2016-05-15
Source PublicationJournal of Hazardous Materials
ISSN18733336 03043894
Volume309Pages:107-115
AbstractManganese dioxide decorated graphene oxide (GOM) was prepared via fixation of crystallographic MnO (α, γ) on the surface of graphene oxide (GO) and was explored as an adsorbent material for simultaneous removal of thorium/uranium ions from aqueous solutions. In single component systems (Th(IV) or U(VI)), the α-GOM (the weight ratio of GO/α-MnO of 2) exhibited higher maximum adsorption capacities toward both Th(IV) (497.5 mg/g) and U(VI) (185.2 mg/g) than those of GO. In the binary component system (Th(IV)/U(VI)), the saturated adsorption capacity of Th(IV) (408.8 mg/g)/U(VI) (66.8 mg/g) on α-GOM was also higher than those on GO. Based on the analysis of various data, it was proposed that the adsorption process may involve four types of molecular interactions including coordination, electrostatic interaction, cation-pi interaction, and Lewis acid-base interaction between Th(IV)/U(VI) and α-GOM. Finally, the Th(IV)/U(VI) ions on α-GOM can be separated by a two-stage desorption process with NaCO/EDTA. Those results displayed that the α-GOM may be utilized as an potential adsorbent for removing and separating Th(IV)/U(VI) ions from aqueous solutions.
KeywordGraphene oxide Manganese dioxide Selective desorption Simultaneous adsorption Uranium/Thorium
DOI10.1016/j.jhazmat.2016.02.012
URLView the original
Language英語
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被引频次[WOS]:67   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题University of Macau
Affiliation1.Sichuan University
2.North China Electric Power University
3.University of Macau
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Pan N.,Li L.,Ding J.,et al. Preparation of graphene oxide-manganese dioxide for highly efficient adsorption and separation of Th(IV)/U(VI)[J]. Journal of Hazardous Materials,2016,309:107-115.
APA Pan N..,Li L..,Ding J..,Li S..,Wang R..,...&Xia C..(2016).Preparation of graphene oxide-manganese dioxide for highly efficient adsorption and separation of Th(IV)/U(VI).Journal of Hazardous Materials,309,107-115.
MLA Pan N.,et al."Preparation of graphene oxide-manganese dioxide for highly efficient adsorption and separation of Th(IV)/U(VI)".Journal of Hazardous Materials 309(2016):107-115.
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