Catalytic hydrogen generation from hydrolysis of ammonia borane using octahedral Au@Pt nanoparticles

• Published in: International journal of hydrogen energy Vol. 40; no. 46; pp. 16316 - 16322
• Main Authors: Park, Ji Won, Lai, Shiau Wu, Cho, Sung Oh
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 14.12.2015
• Subjects: Ammonia borane; Au@Pt nanoparticles; Hydrogen generation; Hydrolysis; Octahedral nanoparticles; Hydrolysis; Octahedral nanoparticles; Hydrogen generation; Au@Pt nanoparticles; Ammonia borane
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2015.09.119

Hydrogen generation from hydrolysis of ammonia borane was investigated using octahedral Au@Pt nanoparticles (NPs) as catalysts. The octahedral Au@Pt NPs were synthesized via a polyol method. Pt NPs were fabricated on the octahedral Au NPs with different atomic ratios of Pt to Au and at different temperatures. The presence of poly(diallyldimethylammonium chloride) as a capping agent is crucial for the successful formation of Pt NPs on the Au nanooctahedra. The synthesized octahedral Au@Pt NPs showed a moderate performance of hydrogen generation from hydrolysis of NH3BH3. The highest catalytic activity of the Au@Pt NPs for the hydrogen generation was observed with activation energy of 44.28 kJ/mol when the Pt coverage on the Au NPs was optimized at the Pt/Au ratio of 1 and the Pt synthetic temperature of 160 °C. •The octahedral Au@Pt nanoparticles synthesized via a polyol method.•The synthesized octahedral Au@Pt NPs showed moderate catalytic performance toward ammonia borane hydrolysis.•The performance of catalyst was optimized with systematic research.