Interfacial S-O bonds specifically boost Z-scheme charge separation in a CuInS₂/In₂O₃ heterojunction for efficient photocatalytic activity.

ABSTRACT: Reducing the recombination rate of photoexcited electron-hole pairs is always a great challenging work for the photocatalytic technique. In response to this issue, herein, a novel Z-scheme CuInS₂/In₂O₃ with interfacial S-O linkages was synthesized by a hydrothermal and subsequently annealing method. The Fourier transform infrared (FT-IR) and X-ray photoelectron spectrometer (XPS) measurements confirmed the formation of covalent S-O bonds between CuInS₂ and In₂O₃. The quenching and electron spin resonance (ESR) tests revealed the Z-scheme transfer route of photogenerated carriers over the CuInS₂/In₂O₃ heterojunctions, which was further verified theoretically via density functional theor

SUBMITTER: Fu X 

PROVIDER: S-EPMC10009657 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature