有机物质在金属表面的吸附研究进展

Progress in Research on Adsorption Properties of Organic Substances on Metal Surface

对不同溶液中有机物质在金属表面的吸附性能及机理进行了综述。讨论了影响吸附过程的电极电势、有机物质的性质和分子结构、金属表面的电荷分布、温度、溶解度等一系列相关因素。吸附稳定性与脱附活化能有关,且脱附活化能越高,吸附稳定性越大。I-和Cl-等特性吸附阴离子能与有机物质分子联合吸附,可提高体系的吸附稳定性;另一方面,特性吸附阴离子的加入还能改变金属表面的电荷分布,从而影响金属表面的吸附性能。

The adsorption properties and mechanisms of organic substances on metal surface in different solution were reviewed. Discussed the impact factors of the adsorption process such as electrode potential, the structure and nature of organic moleculars, the charge distribution of metal surface, temperature and solubility. Adsorption stability is associated to desorption activation energy, and the higher desorption activation energy is, the stronger adsorption stability is. While anions of special adsorption are contained in solution, the adsorption ability and stability of organic substance will be strongthened, because not only can organic substance be adsorbed on metal surface, but also I^- and Cl^- can change the charge distribution of metal surface.