| 초록 |
Recently, graphitic carbon nitride (g-C3N4) have been issued because it is a promising visible-active photocatalyst. However, g-C3N4 has low photocatalytic activity due to its fast recombination of photo-generated charge carriers. So, there are some strategies for long time charge separation. Herein, we fabricated the 3D porous g-C3N4 with spatially separated cocatalyst using fibrous mesoporous silica (KCC-1) as hard template. We used Janus surface whereby the reaction of reduction and oxidation sites are spatially separated to prevent internal recombination. This system has 3D porous structure which enhance the light harvesting and mass transfer because of the highly accessible mesoporous structure of KCC-1. Moreover, The cocatalysts which are consisted by Pt and Co3O4 are seperately located onto the interior and exterior surface of 3D porous g-C3N4. This system gives an insight to prepare highly efficient photocatalyst both on oxidation and reduction reaction under visible light using highly stable, earth abundant, low cost g-C3N4. |
