Luminescence color control of the mesoporous carbon silica nanocomposite by reaction catalyst concentration

Abstract

Photoluminescence (PL) of mesoporous carbon silica (MPCS) under UV light excitation is reported. The MPCS nanocomposite was synthesized by a triconstituent co-assembly method followed by carbonization at 900 ^oC in N₂ and oxidization at 500 ^oC in air. The PL color of MPCS nanocomposite was dependent on the HCl concentration which is used as a catalyst for stimulating hydrolysis and polycondensation. It is speculated that the PL color is effected from the location of C atom in SiO₂ and the framework structure of silica.