Construction of Z-scheme FePSe3/TiO2 heterojunction for enhanced photocatalytic hydrogen evolution

Increasing extreme climate change and natural disasters have stimulated the exploration of alternatives to traditional carbon-based fossil fuels. A Z-scheme FePSe3/TiO2 heterojunction was constructed for hydrogen evolution, which overcomed the problems of narrow band gap, weak photocatalytic redox ability and high photoelectron-hole recombination rate of single-phase FePSe3 nanosheets. FePSe3/TiO2-10% heterojunction exhibited the best photocatalytic activity with the corresponding hydrogen production rate of 1.49 mmol h-1 g-1 under Xe lamp irradiation, which was 261% of single-phase FePSe3 nanosheets. The present work provides a facile method for improving the photocatalytic activity of Fe-based compound nanosheets.