In this study, various concentrations of p-aminothiophenol doped 3-glycidoxypropyltrimethoxysilane based sol-gel matrices (PATP-GPTMS) are prepared through hydrolysis and condensation reactions. The prepared PATP-GPTMS sol-gel is applied on the polished copper (Cu) surface (PATP-GPTMS/Cu) by self-assembly technique. The surface profile of resultant coatings are characterized by important analytical tools such as Fourier transform infra-red (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and stylus profilometer. The surface morphologies of coatings are acquired by scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX) and atomic force microscopy (AFM) techniques. The FT-IR and XPS results revealed the linking of PATP and thiol monolayer on Cu surface in 0.1 M PATP-GPTMS/Cu coating. Further, the corrosion protection ability of PATP-GPTMS/Cu coatings in 3.5% sodium chloride (NaCl) medium are studied by common electrochemical tools. The electrochemical impedance spectroscopy (EIS) results showed that PATP-GPTMS/Cu coating exhibit improved corrosion resistance than the undoped GPTMS/Cu coating. The maximum corrosion inhibition efficiency of 96.39% is achieved on 12 h self-assembly technique based sol-gel coating of 0.1 M PATP-GPTMS/Cu by polarization method. All the results exposed that, the PATP-GPTMS/Cu coating enhanced the corrosion protection of Cu in aqueous 3.5% NaCl medium.

在这项研究中，通过水解和缩合反应制备了各种浓度的对氨基硫酚掺杂的3-环氧丙氧基丙基三甲氧基硅烷基溶胶-凝胶基质（PATP-GPTMS）。通过自组装技术将制备的PATP-GPTMS溶胶-凝胶涂在抛光的铜（Cu）表面（PATP-GPTMS / Cu）上。所得涂层的表面轮廓通过重要的分析工具进行表征，例如傅立叶变换红外（FT-IR）光谱，X射线光电子能谱（XPS）和测针轮廓仪。涂层的表面形态是通过具有能量色散X射线光谱（EDX）和原子力显微镜（AFM）技术的扫描电子显微镜（SEM）获得的。FT-IR和XPS结果表明，在0.1 M PATP-GPTMS / Cu涂层中，铜表面上PATP和硫醇单层的连接。进一步，通过常用的电化学工具研究了PATP-GPTMS / Cu涂层在3.5％氯化钠（NaCl）介质中的腐蚀防护能力。电化学阻抗谱（EIS）结果显示，PAPT-GPTMS / Cu涂层比未掺杂的GPTMS / Cu涂层具有更高的耐腐蚀性。通过极化方法，在基于0.1 m PATP-GPTMS / Cu的溶胶-凝胶涂层的12小时自组装技术的基础上，达到了最大的缓蚀效率96.39％。所有结果表明，PATP-GPTMS / Cu涂层增强了3.5％NaCl水溶液中Cu的腐蚀防护。电化学阻抗谱（EIS）结果显示，PAPT-GPTMS / Cu涂层比未掺杂的GPTMS / Cu涂层具有更高的耐腐蚀性。通过极化方法，在基于0.1 m PATP-GPTMS / Cu的溶胶-凝胶涂层的12小时自组装技术的基础上，达到了最大的缓蚀效率96.39％。所有结果表明，PATP-GPTMS / Cu涂层增强了3.5％NaCl水溶液中Cu的腐蚀防护。电化学阻抗谱（EIS）结果显示，PAPT-GPTMS / Cu涂层比未掺杂的GPTMS / Cu涂层具有更高的耐腐蚀性。通过极化方法，在基于0.1 m PATP-GPTMS / Cu的溶胶-凝胶涂层的12小时自组装技术的基础上，达到了最大的缓蚀效率96.39％。所有结果表明，PATP-GPTMS / Cu涂层增强了3.5％NaCl水溶液中Cu的腐蚀防护。