Application of long wavelength visible light (λ > 650 nm) in photocatalysis with a p-CuO–n-In2O3quantum dot heterojunction photocatalyst

Abstract

A novel CuO quantum dot (QD) sensitized In₂O₃ heterojunction was synthesized by a hydrothermal method and a post-calcination process. The as-prepared CuO-QD–In₂O₃ maintained its photocatalytic activity even under visible light irradiation at a long wavelength beyond 650 nm, which has been observed for the first time.