5-(4-Methoxyphenyl)-3h-1,2-dithiole-3-thione (Anetholi trithionum abbreviation ATT) as a novel and high-efficiency corrosion inhibitor was investigated for Cu in 0.5 mol L⁻¹ H₂SO₄ in diverse temperatures using electrochemical methods, scanning electron microscope, X-ray photoelectron spectroscopy and atomic force microscope. Moreover, quantum chemical calculation and molecular dynamics simulation further reveal the adsorption mechanism of ATT and copper from a microscopic perspective. Polarization curves indicate that ATT is a cathode-type inhibitor at different temperatures. The topography maps of atomic force microscopy and scanning electron microscopy are consistent with the electrochemical results at different temperatures. Furthermore, ATT adsorbed on the surface of copper conformed to the Langmuir Isotherm.

研究了5-（4-甲氧基苯基）-3h-1,2-二硫代-3-硫酮（Anetholi trithionum的缩写ATT）对0.5 mol L ^-1 H ₂ SO _4中的Cu的抑制作用在不同温度下使用电化学方法，扫描电子显微镜，X射线光电子能谱和原子力显微镜。此外，量子化学计算和分子动力学模拟还从微观角度进一步揭示了ATT和铜的吸附机理。极化曲线表明，ATT在不同温度下均是阴极型抑制剂。原子力显微镜和扫描电子显微镜的形貌图与不同温度下的电化学结果一致。此外，吸附在铜表面上的ATT符合Langmuir等温线。