Manipulation of electrocatalytic reaction pathways though surface chemistry: In situ Fourier transform infrared spectroscopic studies of 1,3-butanediol oxidation on a Pt surface modified with Sb and S adatoms

Article Abstract:

Electrocatalytic properties of a Pt electrode modified with adatoms of Sb and S for 1,3-butanediol (1,3-BD) oxidation were studied by cyclic voltammetry and in situ Fourier transform infrared (FTIR) spectroscopy. The electrocatalytic activity of the Pt electrode was altered by two adatoms, [Sb.sub.ad] adatom blocks three surface sites for hydrogen adsorption on a Pt electrode while [S.sub.ad] blocks only one surface site resulting in different interactions between reactant 1,3-BD molecules with electrode surface.

Analysis

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Preparation of carbon-supported core-shell Au-Pt nanoparticles for methanol oxidation reaction: The promotional effect of the Au core

Article Abstract:

Core-shell Au-Pt nanoparticles with intimate contact of Pt and Au are synthesized by a displacement reaction without formation of monometallic Au nanoparticles. The activity enhancement observed when nanoparticles were supported on carbon and used as catalysts for the room-temperature electrooxidation of methanol in acidic solutions is attributed to the presence of Au underneath a very thin Pt shell where electron exchange between Au and Pt had promoted the formation of active oxygen species on Pt.

Nanoparticles

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In-situ microscope FTIRS studies of CO adsorption on an individually addressable array of nanostructured Pt microelectrodes- an approach of combinatorial analysis of anomalous IR properties

Article Abstract:

The anomalous IR properties of nanostructured films composed of Pt islands are investigated using CO adsorption as a probe reaction. Combination of in situ microscope Fourier transform infrared (FTIR) spectroscopy with an individually addressable array of Pt microelectrodes (ME(sub ij)) is used in combinatorial spectroelectrochemical analysis.

Usage, Electric properties, Electrodes

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