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Competitive Adsorption of Pb-II, Ni-II, and Sr-II Ions on Graphene Oxides: A Combined Experimental and Theoretical Study
Yang, SB; Chen, CL; Chen, Y; Li, JX; Wang, DQ; Wang, XK; Hu, WP; Wang DQ(王东琪)
2015
发表期刊CHEMPLUSCHEM
卷号80期号:3页码:480-484
摘要The individual and competitive adsorption of Pb-II, Ni-II, and Sr-II on graphene oxides (GOs) was investigated by experimental and density functional theory (DFT) studies. Experimental results indicate that 1)in all the single, binary, and ternary metal-ion adsorption systems, the sequence of maximum adsorption capacities is Pb-II>Ni-II>Sr-II on GOs; 2)the desorption hysteresis of metal ions from GOs shows the adsorption affinity in the same sequence: Pb-II>Ni-II>Sr-II. For the first time, DFT calculations indicate that 1)Pb-II and Ni-II prefer to interact with the COH group, whereas Sr-II interacts with COH and COC comparably, and 2)Pb-II can easily abstract the OH group from the GOs to form the much more stable Pb(OH)-GO complex. These findings are very important and useful for understanding the mechanisms of heavy-metal-ion adsorption on GOs and assessing the adsorption of coexisting heavy-metal ions on GOs.
文章类型Article
关键词adsorption density functional calculations graphene lead nickel
学科领域Chemistry
DOI10.1002/cplu.201402284
收录类别SCI
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000350471700004
引用统计
被引频次:64[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228257
专题多学科研究中心
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GB/T 7714
Yang, SB,Chen, CL,Chen, Y,et al. Competitive Adsorption of Pb-II, Ni-II, and Sr-II Ions on Graphene Oxides: A Combined Experimental and Theoretical Study[J]. CHEMPLUSCHEM,2015,80(3):480-484.
APA Yang, SB.,Chen, CL.,Chen, Y.,Li, JX.,Wang, DQ.,...&王东琪.(2015).Competitive Adsorption of Pb-II, Ni-II, and Sr-II Ions on Graphene Oxides: A Combined Experimental and Theoretical Study.CHEMPLUSCHEM,80(3),480-484.
MLA Yang, SB,et al."Competitive Adsorption of Pb-II, Ni-II, and Sr-II Ions on Graphene Oxides: A Combined Experimental and Theoretical Study".CHEMPLUSCHEM 80.3(2015):480-484.
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