Ce(IV)-MOF supported bimetallic NiPt nanoparticles for efficient hydrogen generation from ammonia borane hydrolysis

Abstract

Supported bimetallic catalysts exhibit excellent catalytic activity in the hydrogen generation reaction for hydrogen storage materials, where the synergism interaction between the support and the metal needs to be explored. In this work, highly crystalline cerium-based metal-organic framework (CeMOF) supports were prepared to support NiPt alloy nanoparticles for the ammonia borane (AB) hydrolysis. CeMOF supports not only possess stable structural properties and low synthesis costs, but also provide more active sites to facilitate AB hydrolysis. The optimal catalyst, Ni_0.6Pt_0.4/CeMOF, exhibits a significant turnover frequency (11.07 mol_H2·mol_Pt·min^-1) at 298 K, with the conversion of AB reaching 100%. This work contributes a new, cost-effective approach for designing efficient catalysts that can be used in hydrogen generation systems, which is important for the development of sustainable energy storage technologies.

Keywords

Ammonia borane / hydrogen production / CeMOF / NiPt alloy nanoparticles

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