Influence of the calcination duration of ▫$g-C_3N_4/TiO_2$▫ veggie-toast-like photocatalyst on the visible-light triggered photocatalytic oxidation of bisphenol ARoškarič, Matevž (Avtor) Žerjav, Gregor (Avtor) Finšgar, Matjaž (Avtor) Zavašnik, Janez (Avtor) Pintar, Albin (Avtor) titanium dioxidephotocatalystcalcination timephotocatalysis under visible-light illuminationwater remediationbisphenol ATwo commercially available TiO2 (hexagonal-like and spherical-like particles) were used to investigate the effect of g-C3N4 “melting” on the photocatalytic properties of g-C3N4/TiO2 composites. Improvement in the contact between the components was observed when they were thermally treated at 350 °C for an extended period of time (between 2 and 72 h) due to the partial melting and phase fusion of g-C3N4. Consequently, the enhanced contact between the phases allows easier injection of photogenerated electrons from the conduction band of g-C3N4 into TiO2, improving charge carrier separation. The prepared composites were tested for bisphenol A degradation under visible-light illumination, which showed that the components that had been calcined for 24 h performed better due to the improved charge carrier separation. Superoxide anionic radicals and photogenerated holes were identified as active species in the photooxidation experiments conducted under visible-light illumination.Elsevier Science20232023-03-17 13:10:50Neznano16374Journal of alloys and compoundssl© 2023 The Author(s). Published by Elsevier B.V.