Deposition of Platinum Nanoparticles on Carbon Nanotubes by Supercritical Fluid Method

Journal Article · Sat Nov 05 04:00:00 EST 2005 · Journal of Nanoscience and Nanotechnology, 5(11):1852-1857

DOI:https://doi.org/10.1166/jnn.2005.421· OSTI ID:15020484

Yen, Clive; Cui, Xiaoli; Pan, H B; Wang, S; Lin, Yuehe; Wai, Chien M

Carbon nanotube-supported platinum nanoparticles with a 5-15 nm diameter size range can be synthesized by hydrogen reduction of platinum(II) acetylacetonate in methanol modified supercritical carbon dioxide. XPS and XRD spectra indicate that the carbon nanotubes contain zero-valent platinum metal and high-resolution TEM images show that the visible lattice fringes of the Pt particles are crystallites. Carbon nanotubes synthesized with 25% by weight of Pt nanoparticles exhibit a higher activity for hydrogenation of benzene compared with a commercial carbon black platinum catalyst. The carbon nanotube-supported Pt nanocatalyst can be reused at least six times for the hydrogenation reaction without losing activity. The carbon nanotube-supported Pt nanoparticles are also highly active for electrochemical oxidation of methanol and for reduction of oxygen suggesting their potential use as a new electrocatalyst for polymer electrode fuel cell applications.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 15020484
• Report Number(s): PNNL-SA-45660; 6899; KP1302000
• Journal Information: Journal of Nanoscience and Nanotechnology, 5(11):1852-1857, Journal Name: Journal of Nanoscience and Nanotechnology, 5(11):1852-1857
• Country of Publication: United States
• Language: English

Related Subjects

Environmental Molecular Sciences Laboratory
carbon nanotubes
fuel cell
nanotechnology