First Row Transition Metal Ion-Assisted Ammonia-Borane Hydrolysis for Hydrogen Generation

Kalidindi, Suresh Babu and Indirani, M and Jagirdar, Balaji R (2008) First Row Transition Metal Ion-Assisted Ammonia-Borane Hydrolysis for Hydrogen Generation. In: Inorganic Chemistry, 47 (16). pp. 7424-7429.

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Abstract

Ammonia-borane (AB) hydrolysis for the generation of hydrogen has been studied using first row transition metal ions, such as $Co^{2+}$, $Ni^{2+}$, and $Cu^{2+}$. In the cases of cobalt- and nickel-assisted AB hydrolysis, amorphous powders are formed that are highly catalytically active for hydrogen generation. Annealing of these amorphous powders followed by powder X-ray diffraction measurements revealed the presence of Co(O) and $Co_2B$ and Ni(O) and $Ni_3B$, respectively. On the other hand, copper-assisted AB hydrolysis was catalyzed by in situ generated $H^+$ and Cu(0) nanoparticles. The reduction ability of AB for the realization of coinage metal nanoparticles from the respective metal salts has also been studied. These reduction reactions were found to be facile, affording colloids of pure metal nanoparticles. Nanoparticles prepared in this manner were characterized by UV-visible spectroscopy and high-resolution electron microscopy.

Item Type:	Journal Article
Publication:	Inorganic Chemistry
Publisher:	American Chemical Society
Additional Information:	Copyright of this article belongs to American Chemical Society.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	10 Oct 2008 13:37
Last Modified:	19 Sep 2010 04:50
URI:	http://eprints.iisc.ac.in/id/eprint/16046

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