Hydrophilic amorphous Cr2O3 supported Co species toward efficient hydrogen production from ammonia borane under visible light irradiation

Abstract

Herein, we synthesized a hydrophilic support formed from amorphous Cr₂O₃ and KIT-6 containing P123 using a simple solvent-free thermal method for Co species. The obtained catalyst (denoted as Co/Cr₂O₃-F-X) exhibits high activity for hydrogen production from ammonia borane (NH₃BH₃). The optimal Co/Cr₂O₃-F-0.5 exhibits the highest catalytic performance with the turnover frequency (TOF) value of 111.1 min⁻¹. Advanced characterizations suggest the high catalytic performance is attributed to the synergistic effect of the strong interaction between amorphous Cr₂O₃ and KIT-6 containing P123 and improved wettability of the catalyst.