Novel p–n heterojunction BiOI/CeO2 photocatalyst for wider spectrum visible-light photocatalytic degradation of refractory pollutants

A novel BiOI/CeO₂ photocatalyst with high photocatalytic performance was successfully synthesized via a facile in situ precipitation method. The enhanced photocatalytic performance is ascribed to the formation of a p–n junction, which promotes carrier separation.