NH2-MIL-125(Ti) modified graphitic carbon nitride with carbon vacancy for efficient photocatalytic NO removal

This paper reports the application of NH2-MIL-125(Ti) modified carbon nitride Cv-C3N4 with carbon vacancies in the removal of NO. We performed a series of characterizations of the complex and compared various ratios with the individual components. The results of UV spectrum analysis show that the composite's range of light absorption expanded due to the modification of Ti metal–organic framework. Furthermore, the results of photocurrent and electrical impedance indicate the compound has a better ability to generate and transfer electrons. The increase in the compound's NO removal efficiency (up to 63%) indicates that MOF has a positive effect on Cv-C3N4 modification—a good method for photocatalysis. Moreover, the compound can promote photocatalysis in a favorable direction. [Display omitted] A Z-scheme constructed photocatalyst Cv-C3N4/NH2-MIL-125(Ti) was synthesized for visible-light-driven NO removal. •Carbon vacancy can capture electrons, making the separation of electrons and holes more efficient.•Z-scheme heterojunction greatly improved electronic transfer capability.•The catalytic efficiency greatly improved.•The compound catalyst can make catalysis in a more environmentally friendly direction.