TY - JOUR
T1 - Mesoporous microspheres of Pt and Pt/Ru formed by electrodeposition
T2 - Characterization of high surface area
AU - Knutson, Trevor L.
AU - Bollinger, Matthew L.
AU - Smyrl, William H.
PY - 2008/1/4
Y1 - 2008/1/4
N2 - Electroplated mesoporous microspheres of Pt and PtRu have been characterized at various stages of growth by scanning electron microscopy, surface area analysis, and for PtRu, methanol, and CO oxidation response. Microscopy has indicated random, distributed sphere growth throughout the bulk of a carbon black film serving as a host matrix. The structures generally appeared to nucleate within the carbon film early and grew in diameter as deposition progressed, retaining a spherical morphology. Hydrogen adsorption/desorption on Pt samples indicated specific surface areas in excess of 45 m2 g, while carbon monoxide stripping on PtRu samples indicated specific areas over 70 m2 g. Methanol oxidation and CO oxidation response is presented for PtRu deposits that showed a slight enhancement in activity at lower loadings, i.e., smaller particle sizes.
AB - Electroplated mesoporous microspheres of Pt and PtRu have been characterized at various stages of growth by scanning electron microscopy, surface area analysis, and for PtRu, methanol, and CO oxidation response. Microscopy has indicated random, distributed sphere growth throughout the bulk of a carbon black film serving as a host matrix. The structures generally appeared to nucleate within the carbon film early and grew in diameter as deposition progressed, retaining a spherical morphology. Hydrogen adsorption/desorption on Pt samples indicated specific surface areas in excess of 45 m2 g, while carbon monoxide stripping on PtRu samples indicated specific areas over 70 m2 g. Methanol oxidation and CO oxidation response is presented for PtRu deposits that showed a slight enhancement in activity at lower loadings, i.e., smaller particle sizes.
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U2 - 10.1149/1.2811905
DO - 10.1149/1.2811905
M3 - Article
AN - SCOPUS:37549049369
SN - 0013-4651
VL - 155
SP - F17-F21
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 2
ER -