Metal-free C/CNTs/g-CN ternary heterostructures: synthesis and enhanced visible-light-driven photocatalytic performance.

A metal-free C/CNTs/g-CN nanoheterostructure with excellent visible-light photocatalysis for rhodamine B (Rh B) degradation has been reported. Via a convenient low-temperature solution-phase method, g-CN nanosheets can serve as substrate for dispersion of C/CNTs. The loading of C/CNTs onto g-CN nanosheets surfaces significantly enhanced visible-light-driven photocatalytic activity of g-CN catalyst, for oxidation of organic pollutant (Rh B, 100%). Excellent photocatalytic properties of C/CNTs/g-CN can be predominantly attributed to the intimate interfacial contact among constructing compounds, increased specific surface area and enhanced light adsorption efficiency resulted from C/CNTs carbon materials. Particularly, the synergistic heterostructure interaction remarkably hinders the electron-hole pairs recombination, giving rise to significantly enhanced photocatalytic performance of C/CNTs/g-CN in comparison with other counterparts.