十八硫醇自组装膜对银的缓蚀作用

摘要

The self-assembly monolayers (SAMs) of octadecanethiol (ODT) were prepared on the surface of silver electrode. The effects of ODT with different concentrations on silver corrosion inhibition capability were investigated by means of polarization curves, AC impedance, etc. The results show that when the temperature is 50 ℃, self-assembly time 4 hours and ODT concentration 0. 05 mol/L, the inhibition efficiency can reach 97. 1 % and the cover degree can come up to 97. 8 % ? Indicating ODT forms compact SAMs on the surface of silver electrode, which can effectively inhibit the corrosion of silver.%在银电极表面制备了十八硫醇自组装膜,采用极化曲线、交流阻抗等电化学方法研究了不同浓度的十八硫醇对银的缓蚀作用的影响.结果表明:在温度50℃,自组装时间4h,十八硫醇0.05 mol/L的条件下,缓蚀效率达到9 7.1％,覆盖度达到97.8％,十八硫醇在银电极表面形成了致密的自组装膜,有效地抑制了银的腐蚀.