Homeostasis in CuxO/SrTiO3 hybrid allows highly active and stable visible light photocatalytic performance

Abstract

Reversible conversion of Cu²⁺ and Cu⁺ under illumination and with oxidation is demonstrated over Cu_xO/SrTiO₃. Such Cu²⁺/Cu⁺ homeostasis together with its photosensitizer function and p–n heterojunction formation has lead to highly active and stable visible photocatalytic performance. This strategy will provide some new insights into the design of highly efficient photocatalysts.