摘要
在玻碳电极(GC)上,用电化学方法将单缺位Dawson型磷钨杂多酸盐K10P2W17O61·15H2O的阴离子(P2W17)掺杂到聚吡咯(PPY)薄膜中制成的P2W17/PPY/GC化学修饰电极,既保持了该杂多酸的电化学活性和电催化性能,又具有良好的稳定性与灵敏度。研究表明,浓度为0.5mol/L的H2SO4溶液中,聚吡咯薄膜中P2W17的第一个还原峰对NO-2的电还原具有很好的催化活性,其催化电流与NO-2浓度在6.0×10-5~2.6×10-2mol/L范围内呈良好的线性关系。
he anion of single lacunary
Dawsontype tungstophosphate salt K10P2W17O6115H2O(P2W17) was doped into the
polypyrrole (PPY) film on a glass carbon electrode (GC) by electrochemcal method to prepared
the chemically modified electrode(P2W17/PPY/GC).It not only maintains the electrochemical
activity and electrocatalytic property of P2W17,but also has good stability and sensitivity.In
0.50mol/L H2SO4 solution ,the first cathodic peak of P2W17 doping in polypyrrole film can
catalyze well the electroreduction of nitrate.The catalytic current is proportional to the
concentration of NO-2 in the range of 6.010-5to 2.610-2mol/L
出处
《分析试验室》
CAS
CSCD
1999年第4期86-90,共5页
Chinese Journal of Analysis Laboratory
关键词
单缺位
磷钨杂多酸
化学修饰电极
亚硝酸根
测定
Single lacunary
tungstphosphate
polypyrrole film
chemically modified eleectrode
nitrate
electrocatalytic
reduction