高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (6): 850.

• 论文 • 上一篇    下一篇

用石英晶体微天平研究表面活性剂在银固态表面上的动态吸附

周铁安, 肖晓晖, 聂利华, 姚守拙   

  1. 湖南大学化学化工系, 长沙, 410082
  • 收稿日期:1991-06-26 出版日期:1992-06-24 发布日期:1992-06-24
  • 通讯作者: 周铁安
  • 基金资助:

    国家自然科学基金

Dynamic Adsorption Studies on Surfactants on Solid Silver Surface with a Quartz Crystal Microbalance

ZHOU Tie-an, XIAO Xiao-hui, NIE Li-hua, YAO Shou-zhuo   

  1. Department of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082
  • Received:1991-06-26 Online:1992-06-24 Published:1992-06-24

摘要: 吸附是表面活性剂的一个重要特征.迄今用于原位监测表面活性剂在固体表面上吸附重量变化的方法尚不多见.近年来压电石英晶体作为一种高灵敏的质量传感器(石英晶体微天平)已被用于大气和溶液中多种微量成分的监测[1].用石英晶体微天平研究I-、Br-[2]和表面活性剂[3]在金电极上的吸附行为亦有报道.本文研究了十六烷基三甲基溴化铵(CTAB)、十二烷基磺酸钠(SDSO)、十二烷基硫酸钠(SDS)在银固态表面上的吸附平衡动力学特性及其吸附机制.

关键词: 石英晶体微天平, 表面活性剂, 银表面, 吸附

Abstract: The adsorption of ionic surfactants (cetyltrimethyl-ammonium bromide, sodium dodecylsulf onate, sodium dodecylsulfate) on the solid silver surface is studied in situ by using the liquid quartz crystal microbalance.The adsorption isotherms obtained indicate that they obey different adsorption mechanisms.The adsorption layer of the surfactants on Ag is not firmly fixed and can be physically desorbed.

Key words: Quartz crystal microbalance, Surfactant, Silver surface, Adsorption

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