摘要本文采用循环伏安法在氧化钨表面电沉积聚苯胺,制备聚苯胺/氧化钨纳米复合物。通过改变电解液成分、pH值、扫描速率等因素,用循环伏安法测试产物在不同溶液中的电化学活性。结果表明,复合物在低pH电解质溶液中的电化学活性明显高于其在高pH电解质溶液中的电化学活性;随着扫描速率的增大,复合物材料的电化学活性增大;在低pH值的电解质溶液中,峰电流与扫速平方根线性关系良好,说明在低pH条件下,复合物的氧化还原反应为扩散控制。18975
关键词 聚苯胺;复合物;循环伏安法;电化学活性
毕业设计说明书(毕业论文)外文摘要
Title Preparation of PANI/WO3 nanocomposite
Abstract
PANI/WO3 nanocomposites were prepared by electrodepositing PANI onto WO3 using cyclic votammetry. In order to study their electrochemical activity by cyclic voltammetry, we change the composition of electrolytes, pH values and scanning rates. The results showed that the electrochemical activity of the composite in the electrolyte of low pH was significantly higher than that of higher pH. And the electrochemical activities of the composite increased with the increasing scanning rates. Futhermore, in electrolyte of low pH values, the peak currents and the square roots of the scan rates were in good linear relationship, which proved that redox of composite were controlled by diffusion.
Keywords polyaniline; compositie; cyclic voltammetry; electrochemical activity
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