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合成了双水杨醛缩二乙烯三胺席夫碱(H2L)及其Cu2+配合物(CuL·H2O),并对其进行了表征.利用分光光度法考查了CuL·H2O催化降解甲基橙和酸性蓝9的性能,利用HPLC法测定了降解产物.CuL·H2O能催化甲基橙降解,但效果较差,催化降解产物为顺式丁烯二酸.该配合物能催化酸性蓝9降解,37℃条件下降解脱色率达到90%以上,其降解动力学符合酶促反应特征,具有明显的延滞期、线性期和缓慢期.测得米氏常数Km=2.006×10-5mol/L,降解产物为顺式丁烯二酸.推测了CuL·H2O作为仿酶催化剂的催化机理和酸性蓝9的降解机制.说明CuL·H2O具有优良的仿酶特性和底物选择性.
Synthesis and characterization of Schiff base (H2L) and its Cu2 + complex (CuL · H2O) of bis salicylaldiminatoamine were investigated by spectrophotometry. The catalytic degradation of methyl orange by CuL · H2O and Acid blue 9, the degradation products were determined by HPLC.CuL · H2O can catalyze the degradation of methyl orange, but its effect is poor, the catalytic degradation product is maleic acid.The compound can catalyze the degradation of acid blue 9, The decolorization rate reached more than 90% under the condition of 37 ℃, and the degradation kinetics accorded with the characteristics of enzymatic reaction with obvious retardation, linear phase and slow phase.The Km value was 2.006 × 10-5mol / L, and the degradation The product is maleic acid, and the catalytic mechanism of CuL · H2O as a biomimetic catalyst and the degradation mechanism of Acid Blue 9 are presumed, which shows that CuL · H2O has excellent biomimetic properties and substrate selectivity.