EXAFS studies on adsorption-desorption reversibility at manganese oxide-water interfaces II. Reversible adsorption of zinc on delta-MnO2

	EXAFS studies on adsorption-desorption reversibility at manganese oxide-water interfaces II. Reversible adsorption of zinc on delta-MnO2
	Li, XL; Pan, G; Qin, YW; Hu, TD; Wu, ZY; Xie, YN; Hu TD(胡天斗); Wu ZY(吴自玉); Xie YN(谢亚宁)
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2004
卷号	271 期号:1 页码:#REF!
关键词	EXAFS Zn manganese oxides delta-MnO2 gamma-MnOOH metastable adsorption linkage mode adsorption reversibility
通讯作者	Pan, G (reprint author), Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, POB 2871, Beijing 100085, Peoples R China.
英文摘要	Microscopic structures of Zn(II) adsorbed at delta-MnO2-water interfaces were studied using extended X-ray absorption fine structure (EXAFS) spectroscopy. In a 0.1 M NaNO3 solution of pH 5.50, hydrous Zn(II) was adsorbed onto the solid surface in the form of octahedral coordination. Adsorbed octahedral Zn(II) was located above and below the vacancy sites of delta-MnO2. Each Zn was coordinated on one side to H2O molecules forming an H2O sheet and on the other side to oxygen atoms shared with layer MnO6 octahedra forming a corner-sharing octahedral interlayer complex. The average Zn-O and Zn-Mu distances were 2.07 +/- 0.01 and 3.52 +/- 0.01 Angstrom, respectively. Macroscopic adsorption-desorption isotherms showed that, in contrast to that of the Zn-gamma-MnOOH system, adsorption of Zn(II) on delta-MnO2 was highly reversible. EXAFS results indicated that the highly reversible adsorption was due to the weak adsorption mode of the corner-sharing linkage between the adsorbate and adsorbent polyhedra. (C) 2003 Elsevier Inc. All rights reserved.
学科主题	Chemistry
类目[WOS]	Chemistry, Physical
收录类别	SCI
WOS记录号	WOS:000188778600005
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225646]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Li, XL,Pan, G,Qin, YW,et al. EXAFS studies on adsorption-desorption reversibility at manganese oxide-water interfaces II. Reversible adsorption of zinc on delta-MnO2[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2004,271(1):#REF!.
APA	Li, XL.,Pan, G.,Qin, YW.,Hu, TD.,Wu, ZY.,...&谢亚宁.(2004).EXAFS studies on adsorption-desorption reversibility at manganese oxide-water interfaces II. Reversible adsorption of zinc on delta-MnO2.JOURNAL OF COLLOID AND INTERFACE SCIENCE,271(1),#REF!.
MLA	Li, XL,et al."EXAFS studies on adsorption-desorption reversibility at manganese oxide-water interfaces II. Reversible adsorption of zinc on delta-MnO2".JOURNAL OF COLLOID AND INTERFACE SCIENCE 271.1(2004):#REF!.