DFT study of imidazoles adsorption on the grain boundary of Cu (100) surface

DFT study of imidazoles adsorption on the grain boundary of Cu (100) surface
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Cu(100)表面晶界吸附咪唑的DFT研究

DOI:
10.1016/j.corsci.2018.03.009
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发表时间:
2018-06
期刊:
影响因子:
8.3
通讯作者:
Hu SQ
Hu SQ
中科院分区:
材料科学1区
文献类型:
--
作者:
Wang Hongbo;Hao Yilei;Chen Shenghui;Cheng Meng;Li Chunling;Sun Shuangqing;Hu Songqing;Hu Songqing;Sun SQ;Hu SQ

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采用密度泛函理论研究了咪唑(IMD)、苯并三氮唑(BTAH)和2-巯基苯并恶唑(MBO)在Cu(100)表面晶界(GB)上的吸附.结果表明,变形程度越大,吸附位点越多,分子越倾向于吸附在晶界上。分子与晶界的相互作用主要是通过C、N、S单键和Cu键以垂直和平行两种方式进行的化学吸附。根据吸附行为,缓蚀剂分子的缓蚀机理可能是覆盖效应和电荷重新分布。
Density functional theory was used to investigate the adsorption of imidazole (IMD), benzotriazole (BTAH) and 2-mercaptobenzoxazole (MBO) on the grain boundary (GB) of Cu (100) surface. Results show that molecules prefer to adsorb on the grain boundary with the larger distortion degree and more adsorption sites. The main interaction of molecules and grain boundary is chemisorption through C, N, Ssingle bondCu bonds in both perpendicular and parallel modes. Hydrogen bonds and the lateral dipole-dipole interactions are also found. Based on the adsorption behaviour, the coverage effect and charge redistribution might be two possible inhibition mechanisms of inhibitor molecules.
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发表时间: 2017-08-01
期刊: CORROSION SCIENCE
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