有机阳离子12-钨磷杂多酸盐电化学性质的研究

以N，N-二甲基甲酰胺（DMF）为溶剂、四丁基溴化铵（Bu4NBr）为支持电解质、玻碳（GC）为工作电极，用循环伏安（CV）法研究了6种有机阳离子的α-12-钨磷杂多酸盐Q3PW12O40Q=（CH3）4N，（C4H9）4N，C10H29（CH3），N，C12H25（CH3）3N，C14H29（CH3）N，C18H37（CH3）3N]的电化学特性。结果表明：Q3PW12O40在GC电极上有4对准可逆的还原一氧化波，其还原一氧化峰电位和峰电流的差别甚小，因而有机阳离子碳链的大小对12-钨磷杂多阴离子的电化学性质影响较小。这些特性从理论上进行了解释。

Study on Electrochemical Properties of Several Heteropoly-Phosphotungstates with Organic Cations

The electrochemical properties of six kinds of heteropolyphosphotungstates, Q-3PW-12O-40 Q=(CH-3)-4N,(C-4H-9)-4N,C-10H-19(CH-3)-3N,C-12H-25(CH-3)-3N,C-14H-29(CH-3)-3N,C-18H-37(CH-3)-3N] were studied by cyclic voltammetry in the solution of DMF containing supporting electrolyte 0.1 mol/L tetrabutyl ammonium bromide(Bu-4NBr).The results indicate that on the glass carbon electrode,there are four couples of re-oxidation waves,and the peak potentials and peak currents are almost the same,showing a quasi-reversible reaction.But the volumes of the anti-cations have little influence on the electrochemical properties of the heteropolyanions and this have been explained in theory.