Preparation of Lanthanum*# Substituted PropertyHeptadecatungstodiphosphate- Polypyrrole Film Modified Electrode and Its Electr / 分析化学
Chinese Journal of Analytical Chemistry
;
(12): 679-681, 2001.
Artículo
en Chino
| WPRIM
| ID: wpr-410230
ABSTRACT
The heptadecatungstodiphosphate substituted by L a(Ⅲ) with the formula α2-K7P2W17O61(La.OH2 ) (P2W 17La) was prepared by vacant refilling method. The anion of single substitu ted Dawson-type tungstophosphate salt was doped into the polypyrrole (PPY) film on a glassy carbon electrode (GC) by electrochemical method to prepare the chem ically modified electrode (P2W17La/PPY/GC). It maintains not only t he electrochemical activity and electrocatalytic property of P2W17L a, but also has good stability and sensitivity. In 0.50 mol/L HCl solution, th e first cathodic peak of P2W17La doping in polypyrrole film can cat alyze well the electroreduction of nitrite. The catalytic current was proporti onal to the concentration of nitrite between 6.0×10-5 and 1.0×10-2 mol/L.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Idioma:
Chino
Revista:
Chinese Journal of Analytical Chemistry
Año:
2001
Tipo del documento:
Artículo
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