【摘要】 <正> 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Cu²⁺,Co²⁺,Cd²⁺和Pb²⁺的配位作用。更多还原

【Abstract】 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:Cu²⁺>Co²⁺>Cd²⁺>Pb²⁺.The Nls photoelectron spectrum of Cu²⁺ complex with surface Schiff base was quitedifferent from that of Cu²⁺ 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.更多还原