Preparation and Photocatalytic Performance of ITO/g-C3N4 Heterojunction Photocatalysts for Hydrogen Evolution from Water

g-C3N4 and In2O3:Sn (ITO) photocatalysts were synthesized by low-temperature calcined method. A little nanosized ITO as an effective cocatalyst was loaded onto g-C3N4 particle surface by electrostatic attraction. The photocatalytic activity of ITO/g-C3N4 was performed by its H-2 evolution performance under uv-vis irradiation while alcohol was used as a sacrificial agent, and the photocatalyst was characterized by XRD, SEM, TEM and UV-Vis absorption spectrum. The results showed that the photo catalytic activity of ITO/g-C3N4 was superior to that of pure g-C3N4, and loaded ITO can improve the interfacial electron transfer and the H-2 evolution. When the amount of loaded ITO was 4%(wt), the stable average hydrogen evolution rate was about 350 mu mol.g(-1).h(-1).