Zuyi T, Taiwei C, Weijuan L
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
J Colloid Interface Sci. 2000 Dec 1;232(1):174-177. doi: 10.1006/jcis.2000.7201.
Surface complexation models (SCMs) have been used extensively to describe the acid-base properties and adsorption behaviors of inorganic and organic cations and anions on many single-phase adsorbents. The success of SCMs results from the conformation of adsorption to mass-action and material-balance laws and the flexibility in adjustable parameters. However, the assumptions made in the derivation of the SCMs are really not justified and the SCMs are not so thoroughly grounded in fundamental chemistry. The SCMs are really the data-fitting model, rather than the chemical model. The premises of application of SCMs are the accurate identification of surface species and the low surface coverage. Though the application of the SCMs comes into vogue, the SCMs should be applied with caution. Copyright 2000 Academic Press.
表面络合模型(SCMs)已被广泛用于描述无机和有机阳离子及阴离子在许多单相吸附剂上的酸碱性质和吸附行为。SCMs的成功源于其吸附符合质量作用定律和物料平衡定律,以及可调参数的灵活性。然而,SCMs推导过程中所做的假设实际上是不合理的,而且SCMs在基础化学方面的依据并不充分。SCMs实际上是数据拟合模型,而非化学模型。SCMs的应用前提是准确识别表面物种和低表面覆盖率。尽管SCMs的应用正流行起来,但使用时应谨慎。版权所有2000,学术出版社。