Fabrication of highly dispersed platinum-deposited porous g-C3N4 by a simple in situ photoreduction strategy and their excellent visible light photocatalytic activity toward aqueous 4-fluorophenol degradation

A series of highly dispersed platinum-deposited porous g-C 3 N 4 (Pt/pg-C 3 N 4 ) were successfully fabricated by a simple in situ photoreduction strategy using chloroplatinic acid and porous g-C 3 N 4 as precursors. Porous g-C 3 N 4 was fabricated by a pretreatment strategy using melamine as a raw material. The morphology, porosity, phase, chemical structure, and optical and electronic properties of as-prepared Pt/pg-C 3 N 4 were characterized. The photocatalytic activity of as-prepared Pt/pg-C 3 N 4 was preliminarily evaluated by the degradation of aqueous azo dyes methyl orange under visible light irradiation. The as-prepared Pt/pg-C 3 N 4 were further applied to the degradation and mineralization of aqueous 4-fluorophenol. The recyclability of Pt/pg-C 3 N 4 was evaluated under four consecutive photocatalytic runs.