摘要
在自制石墨—环氧树脂固态电极上,于不完全的单体氧化电位下,以循环伏安法制备邻苯二胺超薄膜(UT—PPD),得到两对可逆氧化还原峰,分别归属于两种结构的电聚合产物.实验研究了碘离子在该膜中的电化学行为,得到掺杂反应的一级反应速率常数0.062 s-1和离子缔合常数7.11.该UT—PPD膜对碘离子氧化反应具有很高的催化能力,单位吸附量的聚合膜产生的催化效率为普通PPD膜的8.8倍.
The poly ortho- phenylenediamine ultrathin（UT- PPD） film modified electrode was prepared on graphite - epoxy solid electrode by cyclic voltammetry under oxidation potential. The UT - PPD film shows two pairs of reversible redox peaks, corresponding to the two molecular structures. Iodine ion at the modified electrode shows an irreversible oxidation, which can be used to monitor the doping/dedoping behavior of iodine ion. The doping reaction follows a first order reaction with a rate constant of 0. 062 s^-1 and an equilibrium constant of 7.11. The UT - PPD film shows an enriching catalytic activities for iodine with a catalytic efficiency 8.8 times higher than that of general PPD film.
出处
《沈阳师范大学学报（自然科学版）》
CAS
2005年第4期392-395,共4页
Journal of Shenyang Normal University:Natural Science Edition
基金
辽宁省高校重点实验室主任基金(201-52013202)
关键词
邻苯二胺超薄膜
循环伏安
掺杂
催化
poly - ortho - phenylenediamine ultrathin film
cyclic voltammetry
doping
catalysis
