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.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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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.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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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.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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