氧化锌-聚丙烯酰胺复合水凝胶的循环伏安特性

运用溶液聚合法和沉淀法制备出氧化锌-聚丙烯酰胺复合水凝胶。对复合水凝胶进行X射线衍射分析,红外光谱分析,从而确定复合水凝胶中的成分为氧化锌和聚丙烯酰胺;通过研究复合水凝胶修饰玻碳电极的电化学行为,发现修饰电极对于氯化亚铁电解液具有较好的循环伏安响应;测试不同浓度氯化亚铁的循环伏安曲线,发现随着溶液浓度的增加,修饰电极对于氯化亚铁电解液的电化学响应加强;测试不同扫描速率下的循环伏安曲线,发现随着扫描速率的增加,还原峰电流与氧化峰电流都在增大,而且氧化峰与还原峰之间电位差增大;修饰电极对于其他不同的电解液进行测试,获得不同的循环伏安曲线。

Cycle Volt-Ampere Characteristic of Zinc Oxide-Polyacrylamide Composite Hydrogel

In this paper,we used methods of solution polymerization and precipitation to obtain zinc oxide-polyacrylamide composite hydrogel.The obtained composite hydrogel was analyzed of X-ray diffraction,infrared spectrum analysis,and was determined that the composition of composite hydrogel was composed of zinc oxide and polyacrylamide.Through the research of electrochemical behavior of modified glassy carbon electrode by composite hydrogel,we found it had good circulation volt-ampere response for ferrous chloride electrolyte.Through testing cycle volt-ampere curve with different concentration of ferrous chloride,we found that electrochemical response of modified electrodes for ferrous chloride electrolyte increased with the increase of the concentration of the solution.Through testing circulation volt-ampere curve with different scan rate,we found that reduction peak current and oxidation peak current increased,and peak potential between oxidation and reduction peaks increased with the increase of scan rate.The modified electrodes were tested for other different electrolyte and we got different circulation volt-ampere curve.