Atomic interfacial structure and charge transfer mechanism on in-situ formed BiOI/Bi2O2SO4 p–n heterojunctions with highly promoted photocatalysis

Developing novel and highly efficient Bi-based photocatalysts induced by visible light, and determining their interfacial mechanism represent two significant challenges in the environmental catalysis field. Herein, the preparation of bismuth oxysulfate, Bi2O2SO4, and in-situ couping with BiOI to form a novel BiOI/Bi2O2SO4 p–n heterojunction are described. The optimized BiOI/Bi2O2SO4 heterojunction exhibits remarkable photocatalytic NO oxidation...