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Nanocatalysts impregnated polythiophene electrodes for the electrooxidation of formic acid

Paper ID Volume ID Publish Year Pages File Format Full-Text
48699 46518 2007 8 PDF Available
Title
Nanocatalysts impregnated polythiophene electrodes for the electrooxidation of formic acid
Abstract

Conductive and porous polythiophene (PTh) films, which are used as host matrixes for Pt and Pt–Pd nanoparticles, are synthesized electrochemically. PTh films containing nanometer-sized Pt and Pt–Pd bimetallic particles are electro synthesized on an indium doped tin oxide (ITO) plate by voltammetric cycling between −0.2 and +1.4 V (versus Ag/AgCl/3 M NaCl). The ensuing PTh electrode, modified with nanoparticles, was probed for its catalytic activity towards the electrooxidation of formic acid, an industrially important material. The modified electrode exhibits significant eletrocatalytic activity towards the oxidation of formic acid and this may be attributed to (a) the uniform dispersion of nanoparticles in the PTh film and (b) the efficacy of the nature of Pd species in Pt–Pd bimetallic systems. Monometallic (Pt) and bimetallic (Pt–Pd) nanoparticles are found to be uniformly dispersed in PTh matrixes as confirmed from analytical data using scanning electron microscopy (SEM) and atomic force microscopy (AFM). Energy dispersive X-ray analysis (EDAX) is used to characterize the composition of metal present in the nanoparticles modified electrodes.

Keywords
Electrocatalytic oxidation; Polythiophene; Platinum nanoparticles; Pt–Pd; bimetallic nanoparticles; Formic acid oxidation; Fuel cells
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Nanocatalysts impregnated polythiophene electrodes for the electrooxidation of formic acid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 73, Issues 1–2, 24 April 2007, Pages 172–179
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us