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Synthesis of borohydride nanoparticles at room temperature by precipitation
Authors:Ting Wang  Kondo-Francois Aguey-Zinsou
Affiliation:MERLin, School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
Abstract:Borohydride (LiBH4, NaBH4 and KBH4) nanoparticles were successfully synthesized by a modified ternary anti-precipitation method. A co-solvent was introduced to facilitate the formation of a microemulsion and modify the metastable zone to favour the precipitation of borohydride particles. In this process, the stabilising surfactant's carbon chain length was found to provide an additional mean to further tune particle size due to the resulting steric hindrance. The method reported here finally provides an effective and simple mean to prepare nanosized borohydride particles for hydrogen storage purposes, while minimising the amount of stabilising surfactant that can contaminate the hydrogen release.
Keywords:Borohydrides  Nanoparticles  Precipitation  Hydrogen storage
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