The invention discloses a covalent
triazine organic framework composite photocatalyst with surface confinement monodisperse
Pt nanoparticles as well as a preparation method and application of the covalent
triazine organic framework composite photocatalyst, and belongs to the technical field of material preparation and
photocatalysis. According to the preparation method, a covalent
triazine organicframework is used as a carrier, residual cyano groups in the covalent triazine organic framework are converted into
scaffold carboxyl through
alkaline hydrolysis,
Pt nanoparticles are anchored to thescaffold carboxyl through a photodeposition method, and the covalent triazine organic framework composite photocatalyst Pt-CTF-COOH with the surface confinement monodisperse
Pt nanoparticles is prepared. According to the method, carboxyl functionalization is carried out on a covalent triazine organic framework, Pt is immobilized on a carboxyl support, monodispersion of Pt nanoparticles is achieved, and the efficiency of
photocatalytic decomposition of water into
hydrogen is effectively improved. The photocatalyst is good in stability and long in service life, the synthesis method is simple and convenient, the problems that in the prior art, a photocatalyst preparation process is tedious, poor in stability and the like are solved, the actual production requirement is met, and great application potential is achieved.