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首页> 外文期刊>Electrocatalysis >Electrocatalytic Oxidation of 1-Propanol and 2-Propanolon Electro-active Films Derived from Ni~(II)-(N,N-bis(2-Hydroxy,3-Methoxy Benzaldehyde)-1,2-Propandiimine)Modified Glassy Carbon Electrode
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Electrocatalytic Oxidation of 1-Propanol and 2-Propanolon Electro-active Films Derived from Ni~(II)-(N,N-bis(2-Hydroxy,3-Methoxy Benzaldehyde)-1,2-Propandiimine)Modified Glassy Carbon Electrode

机译：Ni〜（II）-（N，N-双（2-羟基，3-甲氧基苯甲醛）-1,2-丙二亚胺）修饰的玻碳电极对1-丙醇和2-丙醇电活性膜的电催化氧化

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摘要

Complexes of Ni~(II)-(N,N'-bis(2-hydroxy, 3-methoxy benzaldehyde)-1,2-propandiimine) can be electro-polymerized onto GC electrode in an alkaline solution to give an electro-active film strongly adhered on the electrode surface. In alkaline solution, this poly-(Ni~(II){sal-1,2-pn(3-OMe)2})/GC film shows the typical voltammetric response of a surface-immobilized redox couple, as can be anticipated for the Ni~(2+)/Ni~(3+) transitions into the film. In addition, the film exhibits a potent and persistent electro-catalytic activity towards the oxidation of 1- and 2-propanol. In CV studies, in the presence of these alcohols, poly-(Ni~(II){sal-1,2-pn(3-OMe)2})/GC electrode shows a new oxidation peak for the alcohols at a potential much more positive than the oxidation peak potential of Ni species. Based on a proposed mechanism, Ni~(II) sites act as active surface for the direct electro-oxidation of alcohols. The corresponding rate laws have been derived, and the kinetic parameters have been obtained. Also, an amperometric procedure has been successfully applied to the determination of the alcohols.
机译：Ni〜（II）-（N，N'-双（2-羟基，3-甲氧基苯甲醛）-1,2-丙二胺）的配合物可以在碱性溶液中电聚合到GC电极上以产生电活性膜牢固地粘附在电极表面上。在碱性溶液中，这种聚-（Ni〜（II）{sal-1,2-pn（3-OMe）2}）/ GC膜表现出表面固定的氧化还原对的典型伏安响应，这可以预期Ni〜（2 +）/ Ni〜（3+）转变成薄膜。另外，该膜对1-和2-丙醇的氧化表现出强而持久的电催化活性。在CV研究中，在存在这些醇的情况下，聚（Ni〜（II）{sal-1,2-pn（3-OMe）2}）/ GC电极在很远的电势下显示出一个新的醇氧化峰比Ni物种的氧化峰电位更正。基于提出的机理，Ni〜（II）位点充当醇直接电氧化的活性表面。推导了相应的速率定律，并获得了动力学参数。而且，安培法已成功地应用于醇的测定。

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