Visible-light-driven g-C3N4/Ti3+-TiO2 photocatalyst co-exposed {0Â 0Â 1} and {1Â 0Â 1} facets and its enhanced photocatalytic activities for organic pollutant degradation and Cr(VI) reduction

Schematic illustration for the mechanism of photo-generated charge carrier transfers in g-C3N4/Ti3+-TiO2 photocatalyst and its visible-light photocatalytic performance.