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用蒙脱土制备了蒙脱土/SnO_2/染料(靛蓝胭脂红)化学修饰电极.循环伏安图表明,有机染料分子可以持留在蒙脱上膜中,并显示出电化学活性.用蒙脱土制备的化学修饰电极(CME)可以很大地改进电极反应的稳定性.电活性物在蒙脱土膜中的电化学行为是受扩散控制的.测得扩散系数的数量级为10~(-10)cm~2/s.所制得的蒙脱土/SnO_2/染料化学修饰电极对抗坏血酸的电化学氧化显示电催化作用,使它的氧化电位降低了100mV.
The montmorillonite / SnO 2 / dye (indigo carmine) chemically modified electrode was prepared with montmorillonite.The cyclic voltammogram showed that the organic dye molecule could remain on the montmorillonite membrane and showed electrochemical activity.Using montmorillonite The electrochemical stability of electrode reaction can be greatly improved by using chemically modified electrode (CME) prepared from soil.The electrochemical behavior of the electroactive species in montmorillonite is controlled by diffusion and the diffusion coefficient is measured on the order of 10 ~ (-10) ) cm ~ 2 / s.The electrochemical oxidation of ascorbic acid by the montmorillonite / SnO 2 / dye modified electrode showed electrocatalytic activity, which reduced its oxidation potential by 100mV.