Synthesis of New Hybrid Materials of SiO₂@Melamine-Cyanurate as Precursors for Graphite-Like Carbon Nitride

This work describes the use of silica particles obtained by sol-gel method as a template for deposition of supramolecular complexes of melamine cyanurate. To obtain SiO₂@melamine-cyanurate (SiO₂@MCA) material, the method of covalent modification of silica surface by melamine molecules (SiO₂-mel) was applied and the method of its further functionalization by hydrogen-bonded organic framework of melamine-cyanurate (HOF, MCA) was proposed. One of the promising directions of using SiO₂@melamine-cyanurate is obtaining the SiO₂@g-C₃N₄ material based on it. Control of the amount of applied melamine-cyanurate allows one to potentially obtain g-C₃N₄ layers of different thicknesses on the silica surface.