Impact of electric field on Hofmeister effects in aggregation of negatively charged colloidal minerals

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Impact of electric field on Hofmeister effects in aggregation of negatively charged colloidal minerals
	Tang, Ying; Li, Hang; Zhu, Hualing; Tian, Rui; Gao, Xiaodan
刊名	JOURNAL OF CHEMICAL SCIENCES
	2016-01
卷号	128 期号:1 页码:141-151
关键词	Electric field Hofmeister effects ionic polarization colloidal minerals electrostatic interaction
英文摘要	In this study, the aggregation kinetics of negatively charged colloidal minerals in Na++, K++, NH, Mg2+, Ca2+ and Cu2+ solutions were measured and Hofmeister effects therein were estimated through total average aggregation (TAA) rates and critical coagulation concentration (CCC). Hofmeister effects of TAA rates increased exponentially with the increase in electric field strength, which cannot be explained by the classical theories (i.e., ionic size, hydration and dispersion forces), indicating strong electric field at colloidal surface was an indispensable factor in studying Hofmeister effects. Meanwhile, Hofmeister series of CCC values Na+> K+> NH Mg2+> Ca2+> Cu2+ show fine correlation with the polarization of various cations, implying that onic polarization in strong electric field would be responsible for Hofmeister effects in aggregation of colloidal minerals, and the deduction was confirmed by the calculated results of electrostatic interactions between colloidal minerals.
收录类别	SCI
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35871]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Tang, Ying,Li, Hang,Zhu, Hualing,et al. Impact of electric field on Hofmeister effects in aggregation of negatively charged colloidal minerals[J]. JOURNAL OF CHEMICAL SCIENCES,2016,128(1):141-151.
APA	Tang, Ying,Li, Hang,Zhu, Hualing,Tian, Rui,&Gao, Xiaodan.(2016).Impact of electric field on Hofmeister effects in aggregation of negatively charged colloidal minerals.JOURNAL OF CHEMICAL SCIENCES,128(1),141-151.
MLA	Tang, Ying,et al."Impact of electric field on Hofmeister effects in aggregation of negatively charged colloidal minerals".JOURNAL OF CHEMICAL SCIENCES 128.1(2016):141-151.