Competitive Adsorption of Pb-II, Ni-II, and Sr-II Ions on Graphene Oxides: A Combined Experimental and Theoretical Study

	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)
刊名	CHEMPLUSCHEM
	2015
卷号	80 期号:3 页码:480-484
关键词	adsorption density functional calculations graphene lead nickel
英文摘要	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.
学科主题	Chemistry
类目[WOS]	Chemistry, Multidisciplinary
收录类别	SCI
WOS记录号	WOS:000350471700004
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228257]
专题	中国科学院高能物理研究所
推荐引用方式 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.