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用较简化的步骤合成CoTMPyP,并以紫外可见光谱对产物进行表征.循环伏安法和旋转环盘电极法用于研究该配合物的电化学行为及对氧还原的催化性能.发现Co(Ⅱ/Ⅱ)TMPyP~(5+/4+)电对具有较可逆的氧化还原性质,在0.05MH_2SO_4溶液介质中氧化还原电位约为0.28V(vs.SCE),比报道的FeTMPyP和CoTHOEPyP等的为正.CoTMPyP的存在使氧还原的峰电位正移了约0.4V,催化作用遵循EC再生机理.氧的还原沿着分别生成H_2O和H_2O_2的平行途径进行.随着电位的负移,产物中水的比例提高,这可由氧同CoTMPyP的配位作用加以解释.
The CoTMPyP was synthesized by a simpler procedure and the product was characterized by UV-Vis spectroscopy. The cyclic voltammetry and spin-on-disk electrode method were used to study the electrochemical behavior and catalytic performance of the complex. / Ⅱ). The redox potential of TMPyP ~ (5 + / 4 +) was reversible. The redox potential was about 0.28V (vs.SCE) in the 0.05MH_2SO_4 solution, which was lower than that of the reported FeTMPyP and CoTHOEPyP The presence of CoTMPyP shifts the peak potential of oxygen reduction positive by about 0.4V, and the catalytic action follows the mechanism of EC regeneration. The reduction of oxygen proceeds along the parallel pathways that generate H_2O and H_2O_2, respectively. With the negative shift of potential, This is explained by the coordination of oxygen with CoTMPyP.