摘要
有机高分子Schiff碱对金属离子的螯合作用已引起人们的兴趣。硅胶为无定形高比表面无机高分子,通过氯甲基化,可进行多种化学反应而形成各种表面基团。本文报道四种新型硅胶表面Schiff碱（图1）,考察了它们对Cu<sup>2+</sup>,Co<sup>2+</sup>,Cd<sup>2+</sup>和Pb<sup>2+</sup>的配位作用。
Several Schiff base supported silicas have been prepared and their adsorption capacitiesfor metal ions were measured. compared to the Schiff-base-free silica the adsorption capacityof the functionalized ones were greatly improved in the order:Cu^(2+)>Co^(2+)>Cd^(2+)>Pb^(2+).The Nls photoelectron spectrum of Cu^(2+) complex with surface Schiff base was quitedifferent from that of Cu^(2+) ion-free surface Schiff base. Owing to the more extensiveback-bonding in the metal-coordinated - N = C - group, the Nls binding energy is far lowerfor the coordinated group than for the free one.
出处
《应用化学》
CAS
CSCD
北大核心
1990年第4期62-64,共3页
Chinese Journal of Applied Chemistry
基金
霍英东教育基金
