Switching the selectivity of the photoreduction reaction of carbon dioxide by controlling the band structure of a g-C_3N_4 photocatalyst

摘要

The selectivity of the CO_2 photoreduction reaction in the presence of water vapour can be modulated by the band structure of a g-C_3N_4 photocatalyst. The major products obtained using bulk g-C_3N_4 with a bandgap of 2.77 eV and g-C_3N_4 nanosheets with a bandgap of 2.97 eV are acetaldehyde (CH_3CHO) and methane (CH_4), respectively.