文献类型： 外文期刊
作者： Li Yan-Ting 1 ; Liu Xin-Min 1 ; Tian Rui 1 ; Ding Wu-Quan 1 ; Xiu Wei-Ning 2 ; Tang Ling-Ling 1 ; Zhang Jing 1 ; Li Hang 1 ;
作者机构： 1.Southweast Univ, Coll Resources & Environm, Chongqing Key Lab Soil Multiscale Interfacial Pro, Chongqing 400715, Peoples R China
2.Chongqing Acad Agr Sci, Inst Agr Engn, Chongqing 401329, Peoples R China
关键词： Specific ion effect;Ion adsorption;Charged surface;Activation energy
期刊名称：ACTA PHYSICO-CHIMICA SINICA （ 影响因子：10.8； 五年影响因子：5.5 ）
ISSN： 1000-6818
年卷期： 2017 年 33 卷 10 期
页码：
收录情况： SCI
摘要： Ion exchange adsorption is an important physicochemical process at solid/liquid interfaces. In this study, an approach was established to estimate the activation energy of cation exchange reaction on the charged surface, considering Hofmeister effects. The experimental results showed that Hofmeister effects strongly affect the ionic adsorption equilibrium on the charged particle surface. The position of the adsorbed counterion in the diffuse layer was predicted according to the established model, and the ion exchange activation energies for different bivalent cations were estimated via the cation exchange experiments. The activation energy decreases with increasing ion concentration, and the adsorption saturation of cations is a function of the activation energy at different concentrations. The established model of cation exchange adsorption in the present study has universal applicability in solid/liquid interface reactions.
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