Manipulation on active electronic states of metastable phase β-NiMoO₄ for large current density hydrogen evolution.

ABSTRACT: Non-noble transition metal oxides are abundant in nature. However, they are widely regarded as catalytically inert for hydrogen evolution reaction (HER) due to their scarce active electronic states near the Fermi-level. How to largely improve the HER activity of these kinds of materials remains a great challenge. Herein, as a proof-of-concept, we design a non-solvent strategy to achieve phosphate substitution and the subsequent crystal phase stabilization of metastable β-NiMoO₄. Phosphate substitution is proved to be imperative for the stabilization and activation of β-NiMoO₄, which can efficiently generate the active electronic states and promote the intrinsic HER activity. As a result, phosphate substituted β-NiMoO₄ exhibits the optimal hydrogen adsorptio

SUBMITTER: Wang Z 

PROVIDER: S-EPMC8514534 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature