Synthesis of fluorescent composite materials based on graphitic carbon nitride

A highly fluorescent composite powder based on graphitic carbon nitride ($g$-C$_{3}$N$_{4}$) is synthesized by thermal decomposition of melamine in the presence of nanoparticles of aluminum, titanium, and silicon oxides. The fluorescent properties of the composite nanoparticles excited at a wavelength of 532 nm are studied. The relative fluorescence quantum yield of the obtained material is 62%.