Nano Archive

Synthesis of vanadium-doped palladium nanoparticles for hydrogen storage materials

Yamamoto, Yuki and Miyachi, Mariko and Yamanoi, Yoshinori and Minoda, Ai and Maekawa, Shunsuke and Oshima, Shinji and Kobori, Yoshihiro and Nishihara, Hiroshi (2011) Synthesis of vanadium-doped palladium nanoparticles for hydrogen storage materials. Journal of Nanoparticle Research, 13 (12). pp. 6333-6338.

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Abstract

Palladium–vanadium (Pd/V) alloy nanoparticles stabilized with n-pentyl isocyanide were prepared as new hydrogen storage materials by a facile polyol-based synthetic route with tetraethylene glycol and NaOH at 250 °C. The size distribution of the nanoparticles thus obtained featured two peaks at 4.0 ± 1.1 and 1.4 ± 0.3 nm in diameter, which were the mixture of Pd/V alloy and Pd nanoparticles. The ratio between the number of Pd/V and that of Pd nanoparticles was 51:49, and the Pd:V ratio of the overall product was 9:1 in wt%, indicating that the 4.0 nm Pd/V nanoparticles were composed of 81% Pd and 19% V. The inclusion of vanadium caused the increase in the d-spacing and thus expansion of lattice constant. A rapid increase in hydrogen content at low H 2 pressures was observed for the Pd/V nanoparticles, and a 0.47 wt% H2 adsorption capacity was achieved under a H2 pressure of 10 MPa at 303 K. Hydrogen storage performances of Pd/V alloy nanoparticles was superior compared with Pd nanoparticles.

Item Type:Article
ID Code:11409
Deposited By:Prof. Alexey Ivanov
Deposited On:05 Jan 2012 09:29
Last Modified:05 Jan 2012 09:42

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