Efficient photocatalytic oxidative deamination of imine and amine to aldehyde over nitrogen-doped KTi3NbO9 under purple light

Abstract

KTi₃NbO₉ nanoparticles were fabricated via a simple hydrothermal method with a post-calcination treatment. The nitrogen doping (N-KTi₃NbO₉) leads to a narrow band gap, which in turn facilitates efficiently catalysis of imine deamination under purple light that matches its absorption spectra. Furthermore, N-KTi₃NbO₉ exhibits excellent performance in the tandem reaction of photocatalytic imine formation and deamination from various amines. The conversion of benzylamine was up to 100% with >85% benzaldehyde selectivity.