UM
Preparation of graphene oxide-manganese dioxide for highly efficient adsorption and separation of Th(IV)/U(VI)
Pan N.; Li L.; Ding J.; Li S.; Wang R.; Jin Y.; Wang X.; Xia C.
2016
Source PublicationJournal of Hazardous Materials
ISSN3043894
Volume309Pages:107
AbstractManganese dioxide decorated graphene oxide (GOM) was prepared via fixation of crystallographic MnO2 (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-GOM2 (the weight ratio of GO/α-MnO2 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-GOM2 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-GOM2. Finally, the Th(IV)/U(VI) ions on α-GOM2 can be separated by a two-stage desorption process with Na2CO3/EDTA. Those results displayed that the α-GOM2 may be utilized as an potential adsorbent for removing and separating Th(IV)/U(VI) ions from aqueous solutions. © 2016 Elsevier B.V.
KeywordGraphene oxide Manganese dioxide Selective desorption Simultaneous adsorption Uranium/Thorium
DOI10.1016/j.jhazmat.2016.02.012
URLView the original
Language英语
The Source to ArticleScopus
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Cited Times [WOS]:60   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity 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.
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.
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.
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