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在水热条件下通过饱和Keggin结构杂多酸(H3PMo12O40.14H2O)降解合成了一种具有四缺位的1∶8型的高度对称的杂多钼酸盐,(NH4)3H2[H2PMo8O30].4H2O 1。利用X-射线单晶衍射、元素分析、IR、XRPD和电化学分析进行了表征。并探讨了在酸性溶液中对H2O2分解的电催化作用。结果表明,化合物1修饰的碳糊电极(1-MCPE)在酸性溶液中的循环伏安图出现了三对可逆的氧化还原峰。1-MCPE在酸性水溶液中对过氧化氢的电化学还原反应具有较高的催化活性。
A highly symmetric heteropolymolybdate of type 1: 8 with four vacancies, (NH4) 3H2 [H2PMo8O30] 4H2O, was synthesized by the hydrolysis of saturated Keggin structure heteropoly acid (H3PMo12O40.14H2O) under hydrothermal conditions. 1. Characterization was performed using X-ray single crystal diffraction, elemental analysis, IR, XRPD and electrochemical analysis. The electrocatalysis of H2O2 decomposition in acidic solution was also discussed. The results showed that three pairs of reversible redox peaks appeared in the cyclic voltammogram of compound 1 modified carbon paste electrode (1-MCPE) in acid solution. 1-MCPE has high catalytic activity for the electrochemical reduction of hydrogen peroxide in acidic aqueous solution.