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首页> 外文会议>International Zeolite Conference; 20070812-17; Beijing(CN) >Adsorption of amino acids on SBA-15-type mesoporous materialsAdsorption of amino acids on SBA-15-type mesoporous materials
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Adsorption of amino acids on SBA-15-type mesoporous materialsAdsorption of amino acids on SBA-15-type mesoporous materials

机译：氨基酸在SBA-15型介孔材料上的吸附氨基酸在SBA-15型介孔材料上的吸附

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摘要

The adsorption of amino acids such as alanine (Ala), arginine (Arg), phenylalanine (Phe), leucine (Leu) was carried out on a series of SBA-15-type mesoporous materials, namely SBA-15, CH_3 (10%)-SBA-15 and CH_3 (20%)-SBA-15. The extent of Arg adsorption was observed to strongly depend on the aqueous pH and the surface charge of adsorbents. In contrast, Phe adsorption showed the pH insensitivity and was related closely to the degree of organic functionalization of adsorbent. Such a remarkable difference originated from the different types of dominant interactions between amino acids and adsorbents. The adsorption of Arg (basic amino acid) was mainly driven by the electrostatic interaction. However, the driving force for adsorption of Phe (neutral amino acid) attributed to the strong hydrophobic interaction between Phe and SBA-15, especially methyl functionalized SBA-15.
机译：在一系列SBA-15型介孔材料上，即SBA-15，CH_3（10％）对氨基酸进行吸附，如丙氨酸（Ala），精氨酸（Arg），苯丙氨酸（Phe），亮氨酸（Leu）。 ）-SBA-15和CH_3（20％）-SBA-15。观察到Arg的吸附程度在很大程度上取决于水溶液的pH值和吸附剂的表面电荷。相反，Phe吸附显示出pH值不敏感，并且与吸附剂的有机功能化程度密切相关。这种显着差异源自氨基酸和吸附剂之间显性相互作用的不同类型。 Arg（碱性氨基酸）的吸附主要由静电相互作用驱动。但是，Phe（中性氨基酸）吸附的驱动力归因于Phe和SBA-15，尤其是甲基官能化的SBA-15之间的强疏水相互作用。

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