Electrochemical Property Study of Polyoxometalates Acid-polypyrrole Nanopaticles Glass Carbon Electrode Modified with a Macroporous Anodic Alumina Membrane

Abstract

Abstract: A novel modified electrode was prepared by electrochemicaly cycling scanning the glass carbon electrode covered with a macroporous alumina membrane in a solution containing PPy and PMo 12O₃- 40. The reversibility of the cyclic voltammograms was improved obviously. The remarkable advantage of the modified electrode wasthe high sensitivity and favorable electrocatalytic behavior toward NO₂^-. The peak current increased linearly with the concentration of NO₂^- in the range of 8.0×10^-7—0.01 mol/L. The detection limit of NO₂^- was 1.0×10^-9mol/L. The polyoxometalates nanopaticles modified electrode exhibited almost the same electrochemical behavior after 7 d. It is indicated that the PMo₁₂-PPy/AGCE has a good reproducibility, stability and wide linearity range.

Key words: Polyoxometalates nanopaticles, Anodic aluminum oxide films, Modified electrode, NO₂^-

CLC Number:

O657

TrendMD:

WANG Sheng-Tian, QIN Yu-Hua, ZHAI Sheng-Yong, ZHOU Li-Heng, XU Hong-Ding, LI Jing-Hong . Electrochemical Property Study of Polyoxometalates Acid-polypyrrole Nanopaticles Glass Carbon Electrode Modified with a Macroporous Anodic Alumina Membrane[J]. Chem. J. Chinese Universities, 2004, 25(5): 841.

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Electrochemical Property Study of Polyoxometalates Acid-polypyrrole Nanopaticles Glass Carbon Electrode Modified with a Macroporous Anodic Alumina Membrane

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