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本文利用线性电势扫描的方法研究了几种苯并噻唑类化合物及巯基苯基四氮唑在银上的吸附机理。结果表明:2.巯基苯并噻唑和巯基苯基四氮唑以化学吸附方式,通过分子上巯基与银表面的作用形成分子紧密排列的吸附层。25℃下,PMT可以在银表面形成紧密单层。这种吸附在较高吸附温度下可以转化为多层,且完全覆盖银表面。在含Br~-的溶液中,它可以阻碍Br~-与表面的接触。在较大的浓度下,2-甲基苯并噻唑和苯并噻唑也可以在银表面的某些位置,通过杂环上的S原子(或N原子)形成松散的吸附,但这种吸附层不能完全覆盖银表面。电镜实验也表明以上物质在银表面发生了作用。
In this paper, the adsorption mechanism of several benzothiazole compounds and mercaptophenyltetrazolium on silver was studied by linear potential sweep method. The results show that: 2. Mercaptobenzothiazole and mercaptophenyl tetrazolium chemisorption, through the molecular surface of the role of mercapto and silver to form molecules closely packed adsorption layer. At 25 ° C, PMT can form a tight monolayer on the silver surface. This adsorption can be converted to multiple layers at higher adsorption temperatures and completely cover the silver surface. In Br ~ - containing solution, it can hinder Br ~ - contact with the surface. At higher concentrations, 2-methylbenzothiazole and benzothiazole can also form loose adsorption at some sites on the surface of the silver through the S atoms (or N atoms) on the heterocycle, but such adsorbed layers Can not completely cover the silver surface. Electron microscopy experiments also show that the above substances have a role in the silver surface.