Inhibition effect of bamboo leaves extract on steel and zinc in citric acid solution
Inhibition effect of bamboo leaves extract on steel and zinc in citric acid solution
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DOI：
10.1016/j.corsci.2014.05.013
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发表时间：
2014-10
影响因子：
8.3
通讯作者：
Xianghong Li;S. Deng;Xiao-guang Xie;H. Fu
中科院分区：
文献类型：
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作者：
Xianghong Li;S. Deng;Xiao-guang Xie;H. Fu
采用失重法、动电位极化曲线法和电化学阻抗谱法研究了在0.2M柠檬酸（H3C6H5O7）溶液中，毛竹（Phyllostachys nigra Munroleaves' extract，PMLE）对冷轧钢（CRS）和锌的缓蚀作用。采用考虑溶剂效应的密度泛函理论计算方法，研究了光对化学分子结构的影响。结果表明，在0.2M H3C6H5O7溶液中，PMLE对钢和锌均有良好的缓蚀作用，缓蚀效率为锌>钢。PMLE在两种金属表面的吸附均符合Langmuir吸附等温式。
The inhibition effect ofPhyllostachys nigra Munroleaves’ extract (PMLE) on cold rolled steel (CRS) and zinc in 0.2 M citric acid (H3C6H5O7) solution was studied by weight loss, potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) methods. Quantum chemical calculation of DFT including the solvent effect was applied to investigate the adsorption mode through light on chemical molecular structure. The results show that PMLE is a good inhibitor for both steel and zinc in 0.2 M H3C6H5O7solution, and inhibition efficiency follows the order: zinc > steel. The adsorption of PMLE on both metal surface obeys Langmuir adsorption isotherm.