Three-dimensional porous MoS2 nanobox embedded g-C3N4@TiO2 architecture for highly efficient photocatalytic degradation of organic pollutant

Herein, a simple, highly efficient and stable MoS 2 nanobox embedded graphitic-C 3 N 4 @TiO 2 (g-CN@TiO 2 ) nanoarchitecture was synthesized by a facile solvothermal approach. The nano-hybrid photocatalyst was constructed by TiO 2 nanoparticles anchored on the surface of g-CN nanosheets. Then highly crystalline three-dimensional porous MoS 2 nanobox was homogeneously distributed on the g-CN@TiO 2 surface. The g-CN@TiO 2 /MoS 2 hybrid achieved a high photocatalytic degradation efficiency of 97.5% for methylene blue (MB) dye pollutant under visible-light irradiant in an hour which was much better than TiO 2 @MoS 2, g-CN@TiO 2, MoS 2, TiO 2 and g-CN. Furthermore, the reaction rate ( k) value of g-CN@TiO 2 /MoS 2 for MB dye is as high as 3.18 X 10 -2 min −1 , which is ~ 2.65 times better than those of g-CN@TiO 2 and MoS 2 . This work presents a rational structure design, interfacial construction and suitable band gap strategy to synthesize advanced nano-hybrid photocatalyst for degradation of organic pollutant with excellent performance and long-term stability.