Mildly regulated intrinsic faradaic layer at the oxide/water interface for improved photoelectrochemical performance.

ABSTRACT: Metal oxides are widely used in different fields, including photoelectrocatalysis, photocatalysis, dye-sensitized solar cells, photoinduced superhydrophilicity and so on. It is well-known that there are intrinsic hydrated layers on the surfaces of metal oxides in ambient air or the electrolyte. Generally, interface layers between metal oxides and solutions have significant effects on the performances in these applications. However, the exact roles of the intrinsic hydrated layers are still unclear. In this study, taking TiO₂ and Fe₂O₃ as model materials, we propose a mild heat treatment to increase the hydroxyl concentration in the hydrated surface layers of the oxides, which improves their photoelectrochemical performance remarkably. Moreover, we find that

SUBMITTER: Yin Z 

PROVIDER: S-EPMC7473189 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature