摘要
研究了硝基苯在纳米-γ-氧化铝修饰电极上的电化学行为，讨论了修饰剂用量、支持电解质溶液及其酸度、扫描速率、静置时间等因素对硝基苯电还原特性的影响，探讨了硝基苯在中性电解质溶液中的电还原机理。实验结果表明：纳米-γ-氧化铝修饰电极能显著提高硝基苯的还原峰电流，在-0．6～0V电位范围内，硝基苯在该修饰电极上有一对准可逆氧化还原蜂，随着pH增加，硝基苯的还原峰电位朝负电位方向移动。
Electrochemical behaviour of nitrobenzene based at nano-γ-Al2O3 modified glassy carbon electrode （NA/GCE） was studied. Some experimental parameters, such-as amount of modifier, electrolyte solution and pH of electrolyte solution were optimized. The electrochemical reduction mechanism of nitrobenzene was discussed. The results showed that the modified electrode exhibited remarkable electrocatalysis on nitrobenzene in 0.2 mol/L potassium chloride solution. Nitrobenzene gives a quasi-reversible redox peaks at the NA/GCE over the potential range from -0.6 to 0 V. The reduction peak potential of nitrobenzene shifted negatively potential as pH values increased.
出处
《孝感学院学报》
2009年第3期44-48,共5页
JOURNAL OF XIAOGAN UNIVERSITY
关键词
氧化铝
硝基苯
修饰电极
aluminum oxide
nitrobenzene
modified electrode
