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Hydrolytic dehydrogenation of ammonia borane catalyzed by carbon supported Co core–Pt shell nanoparticles

Authors
Journal
Journal of Power Sources
0378-7753
Publisher
Elsevier
Publication Date
Volume
196
Issue
5
Identifiers
DOI: 10.1016/j.jpowsour.2010.09.079
Keywords
  • Co
  • Pt
  • Core–Shell Nanoparticles
  • Ammonia Borane
  • Hydrolysis

Abstract

Abstract Co core–Pt shell nanoparticles (denoted as [email protected] where x=0.33, 0.43, 0.60, 0.68, 0.82) and carbon supported Co core–Pt shell nanoparticles (denoted as [email protected]/C where x=0.60, 0.68, 0.82) ([email protected]/C=43%), which are synthesized through a polyol reduction process with oleic acid as a surfactant, have been investigated as catalysts for hydrogen generation from hydrolysis of ammonia borane (NH3BH3) at 25±0.5°C. The as-prepared Co core–Pt shell nanoparticles are uniformly dispersed on carbon surface with diameters of about 3nm. It is found that the catalysts show favorable performance toward the hydrolysis of NH3BH3 and the catalytic activity is associated with the ratio of Pt to Co. Among the catalysts studied, [email protected]/C ([email protected]/C=43%) displays the highest catalytic performance, delivering a high hydrogen-release rate of 4874mLmin−1g−1 (per catalyst).

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