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標題: A Simple Electrochemical Approach Based on Inexpensive Wall-Jet Screen-Printed Ring Disk Electrode to Evaluate Oxygen Reduction Catalysts
作者: Yang, T.H.
Liao, C.Y.
Chang, J.L.
Lien, C.H.
Zen, J.M.
關鍵字: Oxygen reduction reaction;Manganese dioxide;Ring disk electrode;Screen-printed electrode;Catalysts;Oxygen;flow-injection analysis;manganese-dioxide film;hydrogen-peroxide;amperometric determination;carbon electrode;thin-film;electrocatalytic reduction;gold nanoparticles;mno2 nanoparticles;alloy
Project: Electroanalysis
期刊/報告no:: Electroanalysis, Volume 21, Issue 21, Page(s) 2390-2394.
A simple electrochemical approach to evaluate oxygen reduction catalysts using an inexpensive screen-printed ring disk carbon electrode system, consisting of a ring electrode deposited with MnO(2) and a disk electrode modified with the catalysts for study, is developed in this study. The as-prepared MnO(2) is selective and sensitive for H(2)O(2) oxidation in the presence of O(2) and is crucial to the proposed approach. By coupling with a wall-jet electrochemical cell, the product generated from the reduction reaction at the disk electrode can effectively be monitored at the MnO(2)- deposited ring electrode. Model catalysts of nano-Au and nano-Pd representing 2e(-) reduction of O(2) to H(2)O(2) and 4e(-) reduction to H(2)O, respectively, were evaluated as electrode materials in oxygen reduction reaction to demonstrate the applicability of the proposed method.
ISSN: 1040-0397
DOI: 10.1002/elan.200904696
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