Nano-Mof@Defected Film C(3)N(4)Z-Scheme Composite For Visible-Light Photocatalytic Nitrogen Fixation

Photocatalytic nitrogen fixation has attracted extensive attention in recent years. Studies have shown that catalytic materials with O, N and other defects can effectively reduce the bond energy of NN triple bond when N(2)is adsorbed on the defects. As an outstanding non-metallic catalyst, g-C(3)N(4)has been widely studied in the field of photocatalytic catalysis, and the nitrogen-defected C(3)N(4)shows promoted photocatalytic activity. Herein, nano-size MOF-74 particles (<20 nm) was dispersed on nitrogen-defected C(3)N(4)thin film (similar to 4 nm)viaa simple sol-gel method. The combination of Nano-MOF and defected film C(3)N(4)could effectively improve the photocatalytic activity of nitrogen fixation through Z-scheme mechanism compared with pure defected film C3N4.