Synthesis of a binary alloy nanoparticle catalyst with an immiscible combination of Rh and Cu assisted by hydrogen spillover on a TiO₂ support.

ABSTRACT: This work demonstrated the use of TiO₂ as a promising platform for the synthesis of non-equilibrium RhCu binary alloy nanoparticles (NPs). These metals are regarded as immiscible based on their phase diagram but form NPs with the aid of the significant hydrogen spillover on TiO₂ with concurrent proton-electron transfer. The resulting RhCu/TiO₂ exhibited 2.6 times higher catalytic activity than Rh/TiO₂ during hydrogen production from the hydrolysis of ammonia borane (AB), due to a synergistic effect. Theoretical simulations showed a higher energy value for the adsorption of AB on the RhCu alloy and a lower activation energy for the rate determining N-B bond dissociation by the attack of H₂O during AB hydrolysis compared to monometallic

SUBMITTER: Masuda S 

PROVIDER: S-EPMC8152661 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature