NDLI: Electrodeposited noble metal particles in polyelectrolyte multilayer matrix as electrocatalyst for oxygen reduction studied using SECM.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Shen, Yan Träuble, Markus Wittstock, Gunther
Description	Country affiliation: Germany Author Affiliation: Shen Y ( Carl von Ossietzky University Oldenburg, Faculty of Mathematics and Natural Sciences, Institute of Chemistry and Biology of the Marine Environment (ICBM), D-26111, Oldenburg, Germany.)
Abstract	Taking the advantage of the stability and penetrability of polyelectrolyte films formed by layer-by-layer (LbL) deposition, noble metal particles of Pd and Pt were fabricated in a preformed polyeletrolyte multilayer film by galvanic deposition. The metal deposition occurred as metal particles and they were tested for their properties as electrocatalyst for oxygen reduction. Atomic force microscopy (AFM) was used to characterize the morphology of the particle films. The noble metal particles were investigated by cyclic voltammetry (CV) and scanning electrochemical microscopy (SECM) with respect to oxygen reduction. The results show that the electrocatalytic properties of the Pd particle film can be adjusted by the electrodeposition time. The hydrogen peroxide formed as an intermediate during electroreduction of dioxygen was conveniently measured in the SECM using the substrate-generation/tip-collection mode. The relevance of the main reduction pathways could be extracted from fitting the current transients to an analytical model.
File Format	HTM / HTML
ISSN	14639076
Issue Number	25
Volume Number	10
e-ISSN	14639084
Journal	Physical Chemistry Chemical Physics
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2008-07-07
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Physics Discipline Biophysics Discipline Chemistry Metal Nanoparticles Chemistry Oxygen Palladium Platinum Polymers Catalysis Computer Simulation Electric Power Supplies Electrochemistry Electrodes Electroplating Gold Hydrogen Peroxide Microscopy, Atomic Force Microscopy, Electron, Scanning Methods Models, Chemical Oxidation-reduction Polyethylenes Quaternary Ammonium Compounds Sulfonic Acids Surface Properties Water Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Physical and Theoretical Chemistry

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