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离子强度对吸附影响机理的研究进展

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吴志坚, 刘海宁, 张慧芳. 离子强度对吸附影响机理的研究进展[J]. 环境化学, 2010, 29(6): 997-1003.
引用本文: 吴志坚, 刘海宁, 张慧芳. 离子强度对吸附影响机理的研究进展[J]. 环境化学, 2010, 29(6): 997-1003.
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WU Zhijian, LIU Haining, ZHANG Huifang. RESEARCH PROGRESS ON MECHANISMS ABOUT THE EFFECT OF IONIC STRENGTH ON ADSORPTION[J]. Environmental Chemistry, 2010, 29(6): 997-1003.
Citation: WU Zhijian, LIU Haining, ZHANG Huifang. RESEARCH PROGRESS ON MECHANISMS ABOUT THE EFFECT OF IONIC STRENGTH ON ADSORPTION[J]. Environmental Chemistry, 2010, 29(6): 997-1003.
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离子强度对吸附影响机理的研究进展

  • 1.

    华侨大学材料科学与工程学院, 泉州, 362021;

  • 2.

    中国科学院青海盐湖研究所, 西宁, 810008;

  • 3.

    中国科学院研究生院, 北京, 100049

  • 基金项目:

    福建省自然科学基金(E0710016)

    国家自然科学基金(50972151)

    中国科学院"百人计划"基金(0660011106)资助项目

RESEARCH PROGRESS ON MECHANISMS ABOUT THE EFFECT OF IONIC STRENGTH ON ADSORPTION

  • 1.

    College of Materials Science and Engineering, Huaqiao University, Quanzhou, 362021, China;

  • 2.

    Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, China;

  • 3.

    The Graduate University of Chinese Academy of Sciences, Beijing, 100049, China

  • Fund Project:

  • 摘要: 本文介绍了水溶液中离子或分子的水合、吸附剂表面的双电层模型以及内层与外层表面络合物,在此基础上讨论了离子强度对吸附的影响.一般来说,溶液的离子强度增大时,吸附质与吸附剂之间的静电作用减弱,疏水作用增强,络合作用变化不大.电解质离子能通过与吸附质离子产生离子交换竞争、对吸附质产生盐析或盐溶效应、改变溶液中大分子吸附质分子的大小、与吸附质离子形成离子对等方式影响吸附.
    Abstract: The effect of ionic strength on the adsorption at solid/liquid interface has been discussed based on the introduction of the hydration of molecules and ions, the Stern and classical triple-layer models at metal oxide/water solution interfaces, and inner and outer sphere surface complexes. Generally speaking, with the increase in ionic strength, the electrostatic interactions between adsorbents and adsorbates decrease, and the hydrophobic interactions increase, the complexation does not have any obvious changes. Electrolytes affect adsorption by ion exchange competition with adsorbate ions, by salting-in and salting-out effects on adsorbates, by changing adsorbate molecular size, and by forming ion pairs with adsorbates, etc.
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  • 收稿日期:  2009-12-24

离子强度对吸附影响机理的研究进展

  • 1.  华侨大学材料科学与工程学院, 泉州, 362021;
  • 2.  中国科学院青海盐湖研究所, 西宁, 810008;
  • 3.  中国科学院研究生院, 北京, 100049
  • 收稿日期:  2009-12-24
基金项目:

福建省自然科学基金(E0710016)

国家自然科学基金(50972151)

中国科学院"百人计划"基金(0660011106)资助项目

摘要: 本文介绍了水溶液中离子或分子的水合、吸附剂表面的双电层模型以及内层与外层表面络合物,在此基础上讨论了离子强度对吸附的影响.一般来说,溶液的离子强度增大时,吸附质与吸附剂之间的静电作用减弱,疏水作用增强,络合作用变化不大.电解质离子能通过与吸附质离子产生离子交换竞争、对吸附质产生盐析或盐溶效应、改变溶液中大分子吸附质分子的大小、与吸附质离子形成离子对等方式影响吸附.

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