Synthesis of porphyrin sensitized TiO_2/graphene and its photocatalytic property under visible light

摘要

A novel porphyrin sensitized TiO_2/graphene photocatalyst was synthesized via a simple method using TiO_2 nanowires, reduced graphene oxide and porphyrin. Reduced graphene oxide sheets are an excellent conductor that can inhibit the charge recombination and enhance the electron-hole separation of modified TiO_2 nanowires. Porphyrin sensitized on TiO_2 nanowires acts as a sensibilizer to increase the light absorption of the photocatalyst. The composite with a large superficial area shows improved photocatalytic property to decompose methylene blue under visible light irradiation.