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	Wien effect determination of binding and adsorption energies between positively charged nano-particles and anions
	Wang, Yujun1; Zhou, Dongmei2; Li, Chengbao1
刊名	JOURNAL OF SOILS AND SEDIMENTS
	2011-07-01
卷号	11期号:5页码:783-788
关键词	Electrical conductivity gamma-Aluminum oxide Hematite Mean free binding energy Mean free adsorption energy
ISSN号	1439-0108
DOI	10.1007/s11368-011-0366-z
通讯作者	Li, Chengbao(chbli@issas.ac.cn)
英文摘要	The energy relationships between nano-particles and ions are the best measure characterizing the interactions of ions with nano-particles. The energy relationships, which include mean free binding and adsorption energies, can be easily determined via the measurements of Wien effect in suspensions. The hematite and gamma-Al(2)O(3) particles, which carried only the positive charge, were used as the testing samples in this work. The mean free binding and adsorption energies of F(-) , Cl(-), and NO (3) (-) to hematite and gamma-Al(2)O(3) particles determined by means of the suspension Wien effect, measured with the homemade apparatus of SHP-2, are presented. The mean Gibbs free binding energies of the three anions to hematite and gamma-Al(2)O(3) particles diminished all in the order F(-) > Cl(-) > NO (3) (-) , but the binding energies of the anions to hematite particles, which was 5.99, 3.91, and 2.80 kJ mol(-1) for F(-), Cl(-), and NO (3) (-) , respectively, were lower than those to gamma-Al(2)O(3) particles, which was 8.12, 7.96, and7.70 kJ mol(-1), respectively. The changes in the mean free adsorption energies of the three anions to hematite particles were of the order F(-) > Cl(-) > NO (3) (-) at the field strengths more than 70 kV cm(-1), while the mean free adsorption energies of the Cl(-) and NO (3) (-) to gamma-Al(2)O(3) particles nearly approached, but those for F(-) in the range of tested field strengths were all negative, which could suggest that the interaction of F(-) with gamma-Al(2)O(3) particles differed to some extent from that with hematite particles. The mean free binding energies of the three anions to hematite and gamma-Al(2)O(3) particles diminished all in the order F(-) > Cl(-) > NO (3) (-) , but the binding energies of the anions to hematite particles were lower than those to gamma-Al(2)O(3) particles. The changes in the mean free adsorption energies of the three anions to hematite particles were of the order F(-) > Cl(-) > NO (3) (-) at the field strengths more than 70 kV cm(-1), while the mean free adsorption energies of the Cl(-) and NO (3) (-) to gamma-Al(2)O(3) particles nearly approached.
收录类别	SCI
WOS关键词	SOIL PARTICLES ; SUSPENSIONS ; CATIONS ; IONS
WOS研究方向	Geology ; Agriculture
WOS类目	Geosciences, Multidisciplinary ; Soil Science
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000292312200008
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558887
专题	南京土壤研究所
通讯作者	Li, Chengbao
作者单位	1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yujun,Zhou, Dongmei,Li, Chengbao. Wien effect determination of binding and adsorption energies between positively charged nano-particles and anions[J]. JOURNAL OF SOILS AND SEDIMENTS,2011,11(5):783-788.
APA	Wang, Yujun,Zhou, Dongmei,&Li, Chengbao.(2011).Wien effect determination of binding and adsorption energies between positively charged nano-particles and anions.JOURNAL OF SOILS AND SEDIMENTS,11(5),783-788.
MLA	Wang, Yujun,et al."Wien effect determination of binding and adsorption energies between positively charged nano-particles and anions".JOURNAL OF SOILS AND SEDIMENTS 11.5(2011):783-788.

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