Characterization of platinum catalyst supported on carbon nanoballs prepared by solution plasma processing

Journal Article · Wed Jul 15 00:00:00 EDT 2009 · Journal of Vacuum Science and Technology. A, International Journal Devoted to Vacuum, Surfaces, and Films

DOI:https://doi.org/10.1116/1.3077285· OSTI ID:22053505

Ichin, Yoshimichi; Mitamura, Koji; Saito, Nagahiro; Takai, Osamu ^[1]

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1. Department of Materials, Physics and Energy Engineering, Nagoya University, Nagoya 464-8603 (Japan)

In order to improve the energy-conversion efficiency in fuel cells, the authors loaded Pt nanoparticles on carbon nanoballs (CNBs) by using solution plasma processing (SPP) involving CNB and Pt ion with a protection group. In this study, we employed poly(vinylpyrrolidone) (PVP) or sodium dodecyl sulfate (SDS) to prepare Pt nanoparticles supported on CNB (Pt/CNB) by the SPP, and the electrochemical properties as a catalyst was evaluated by cyclic voltammetry. The carbon nanoballs were prepared by thermal decomposition process of ethylene and hydrogen gases. Color of the solution changed from yellow to dark brown as synthesis time. This change indicates the improvement of dispersibility of CNB. Moreover, transmission electron microscopy images and elemental mapping images showed the Pt nanoparticles supported on CNB. A catalytic activity of the Pt/CNB in use of SDS was shown to be higher than the Pt/CNB prepared with PVP system. The SDS-containing Pt/CNB also showed the higher activity than that obtained by the conventional method.

• OSTI ID: 22053505
• Journal Information: Journal of Vacuum Science and Technology. A, International Journal Devoted to Vacuum, Surfaces, and Films, Vol. 27, Issue 4; Other Information: (c) 2009 American Vacuum Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1553-1813
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARBON
CATALYSTS
ELECTROCHEMISTRY
ENERGY CONVERSION
ETHYLENE
FUEL CELLS
HYDROGEN
NANOSTRUCTURES
PARTICLES
PLASMA
PLATINUM
PLATINUM IONS
PROCESSING
PVP
PYROLYSIS
SODIUM SULFATES
TRANSMISSION ELECTRON MICROSCOPY
VOLTAMETRY