Indirect Z-Scheme BiOI/g-C 3 N 4 Photocatalysts with Enhanced Photoreduction CO 2 Activity under Visible Light Irradiation

Rational design and construction of Z-scheme photocatalysts has received much attention in the field of CO2 reduction because of its great potential to solve the current energy and environmental crises. In this study, a series of Z-scheme BiOI/g-C3N4 photocatalysts are synthesized and their photocatalytic performance for CO2 reduction to produce CO, H2 and/or CH4 is evaluated under visible light irradiation (λ > 400 nm). The results show that the as-synthesized composites exhibit more highly efficient photocatalytic activity than pure g-C3N4 and BiOI and that the product yields change remarkably depending on the reaction conditions such as irradiation light wavelength. Emphasis is placed on identifying how the…

• NN
  National Natural Science Foundation of China

  Awards: J1210060, 21471133
• FO
  Foundation of Henan Educational Committee

  Award: 14A150001