High-resolution images of Pd particles supported on highly oriented pyrolytic graphite and glassy carbon

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2055152· OSTI ID:7126318

Murakami, Yasushi; Naoi, Katsuo; Yahikozawa, Kiyochika; Takasu, Yoshio ^[1]

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1. Shinshu Univ., Ueda (Japan). Dept. of Fine Materials Engineering

Ultrafine metal particles dispersed on supporting materials have been developed as catalysts for the oxidation of automobile exhaust gas, the hydrogenation of carbon monoxide, and electrodes of fuel cells. Both activities and selectivities of these reactions depend on the morphology of the dispersed metal. The morphology of palladium particles supported on both highly oriented pyrolytic graphite (HOPG) and glassy carbon was studied using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The particles on the HOPG were linked with neighboring particles to agglomerate, while the particles on the glassy carbon were circular. AFM data with tapping mode for the palladium particles on HOPG were consistent with the high-resolution SEM image. Although the lateral resolution of the AFM image was lower than that for the high-resolution SEM data, the AFM image clearly indicated the height distribution of the agglomerates.

• OSTI ID: 7126318
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 141:9; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CARBON
CATALYST SUPPORTS
CATALYSTS
CATALYTIC CONVERTERS
CHEMICAL REACTIONS
DATA
DEPOSITION
DIRECT ENERGY CONVERTERS
ELECTROCATALYSTS
ELECTROCHEMICAL CELLS
ELEMENTS
EQUIPMENT
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
FUEL CELLS
INFORMATION
METALS
MORPHOLOGY
NONMETALS
NUMERICAL DATA
PALLADIUM
PLATINUM METALS
POLLUTION CONTROL EQUIPMENT
PYROLYTIC CARBON
SURFACE PROPERTIES
TRANSITION ELEMENTS