Controllable evolution of NiOOH/Au3+ active species for the oxidation of 5-hydroxymethylfurfural

Abstract

To induce the generation of active species at the metal–carrier interface, a new synthetic strategy was successfully developed to reconstruct the Ni MOF–Au via electrochemical activation. This unique configuration not only obtained high-valence NiOOH–Au³⁺ species, but also stably anchored the Au nanoparticles on the surface of the catalyst. As a result, nearly 99.8% FDCA yield and 100% Faraday efficiency of FDCA were achieved at the optimal potential of 1.57 V vs. RHE. Therefore, this electrochemical reconstruction provides new insights for the development of efficient catalysts in other heterogeneous catalytic reactions.