The corrosion inhibition of copper in hydrochloric acid solutions by a tripeptide compound

The corrosion inhibition of copper in hydrochloric acid solutions by a tripeptide compound
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三肽化合物对铜在盐酸溶液中的缓蚀作用

DOI:
10.1016/j.corsci.2009.06.015
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发表时间:
2009-10
期刊:
影响因子:
8.3
通讯作者:
He, Xian-Ming
He, Xian-Ming
中科院分区:
材料科学1区
文献类型:
--
作者:
Cai, Qi-Rui;Gao, Li-Xin;Zhang, Da-Quan;Kim, Gui Soon;He, Xian-Ming

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采用失重法、循环伏安法、电化学阻抗谱(EIS)和动电位极化等方法研究了谷胱甘肽在0.5M盐酸溶液中对铜的无毒缓蚀剂效果。谷胱甘肽在10mM浓度下的保护效率最高,约为92.7%。动电位极化和阻抗测量的结果吻合得很好。谷胱甘肽在铜表面的吸附遵循Langmuir等温线。谷胱甘肽在铜表面的吸附自由能(~−32kJmol−1)表明其在金属表面具有很强的物理吸附作用。
The efficiency of glutathione as a non-toxic corrosion inhibitor for copper in 0.5M HCl has been studied by using the weight-loss technique, cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. Maximum protection efficiency reaches about 92.7% for glutathione at 10mM concentration level. Results obtained from potentiodynamic polarization and impedance measurements are in good agreement. The adsorption of glutathione on copper surface follows Langmuir isotherm. The adsorption free energy of glutathione on copper (∼−32kJmol−1) reveals a strong physical adsorption of the inhibition on the metal surface.
DOI: 10.1016/s0010-938x(01)00166-4
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