杂多酸-PDDA多层膜在4-ATP修饰金电极上的电化学性质  

ELECTROCHEMICAL BEHAVIORS OF MULTILAYERS COMPOSED OF HETEROPOLYANIONS AND PDDA ON 4-ATP MODIFIED GOLD ELECTRODES

作　　者：黄正国[1] 孙勤枢[1] 程龙[2] 刘柏峰[2] 董绍俊[2] 

机构地区：[1]济宁医学院化学教研室 [2]中国科学院长春应用化学研究所

出　　处：《济宁医学院学报》2001年第1期24-26,共3页Journal of Jining Medical University

摘　　要：目的　制备包含杂多酸 (SiMo11VO4 05-和Pr(SiMo7W4 O4 05-) )和聚合物阳离子PDDA的多层膜修饰电极 ,研究其电化学行为。方法　利用电化学生长法制备多层膜修饰电极 ,并用循环伏安法研究其电化学行为。结果　Mo的第三个还原峰随多层膜层数的增加显著增长 ,而另两个还原峰增长缓慢甚至不增长。多层膜修饰电极的峰电位随pH的增加而线性负移。结论　该多层膜的电化学性质不同于以往制备的多层膜 。Objective To fabricate new multilayer films composed of heteropolyanions(SiMo 11 VO 40 5- and Pr(SiMo 7W 4)O 40 5- ) and cationic polymer poly(diallyldimethylammonium chloride),and to study their electrochemical behaviors Methods Growth processes of the composite films were characterized by cyclic voltammetry Results The third Mo redox peaks increase very rapidly, whereas the other Mo redox peaks increase very slowly when the number of layers of heteropolyanions is greater The peak potentials of composite films linearly shift to negative with greater pH which imply protons were involved in the redox processes of HPA Conclusion The electrochemical behaviors of the new multilayer films are different from those made previousely

关 键 词：电化学生长 多层膜 电催化 杂多酸 PDDA 金电极 修饰电极 

分 类 号：O646[理学—物理化学] O641.4[理学—化学]