EXAFS study of Zn (II) adsorption and precipitation on gamma-MnOOH surface under different pH conditions

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	EXAFS study of Zn (II) adsorption and precipitation on gamma-MnOOH surface under different pH conditions
	Zhu, MQ; Pan, G; Li, XL; Liu, T; Yang, YH
刊名	ACTA PHYSICO-CHIMICA SINICA
	2005
卷号	21 期号:10 页码:1169-1173
关键词	Zn(II) adsorption precipitation gamma-MnOOH EXAFS
英文摘要	Mechanisms of adsorption and precipitation of Zn (II) on gamma-MnOOH-water interfaces at pH 7.00, 7.50 and 8.00 were studied using EXAFS (extended X-ray absorption fine structure). The Zn-O distance for adsorbed Zn(II) was 0.202nm, which did not change when pH increased from. 7.00 to 8.00. This result implied that Zn2+ was adsorbed as a mixture of tetrahedron and octahedron. At pH 7.00, Zn 21 was adsorbed on (110) or (001) plane of gamma-MnOOH by edge linkage mode, which corresponded a Zn-Mn distance of similar to 0.300 nm. At pH 7.50 and 8.00, most Zn(11) was precipitated as multinuclear hydroxo-complexes with similar structures where the Zn-Zn distances were 0.353 nm ( tetrahedron-octahedron linkage) and 0.311 nm (octahedron-octahedron linkage), respectively.
学科主题	Chemistry
研究领域[WOS]	Chemistry
WOS记录号	WOS:000232814500022
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/23291]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Zhu, MQ,Pan, G,Li, XL,et al. EXAFS study of Zn (II) adsorption and precipitation on gamma-MnOOH surface under different pH conditions[J]. ACTA PHYSICO-CHIMICA SINICA,2005,21(10):1169-1173.
APA	Zhu, MQ,Pan, G,Li, XL,Liu, T,&Yang, YH.(2005).EXAFS study of Zn (II) adsorption and precipitation on gamma-MnOOH surface under different pH conditions.ACTA PHYSICO-CHIMICA SINICA,21(10),1169-1173.
MLA	Zhu, MQ,et al."EXAFS study of Zn (II) adsorption and precipitation on gamma-MnOOH surface under different pH conditions".ACTA PHYSICO-CHIMICA SINICA 21.10(2005):1169-1173.