Metal-free C60/CNTs/g-C3N4 ternary heterostructures: synthesis and enhanced visible-light-driven photocatalytic performance

摘要

A metal-free C₆₀/CNTs/g-C₃N₄ nanoheterostructure with excellent visible-light photocatalysis for rhodamine B (Rh B) degradation has been reported. Via a convenient low-temperature solution-phase method, g-C₃N₄ nanosheets can serve as substrate for dispersion of C₆₀/CNTs. The loading of C₆₀/CNTs onto g-C₃N₄ nanosheets surfaces significantly enhanced visible-light-driven photocatalytic activity of g-C₃N₄ catalyst, for oxidation of organic pollutant (Rh B, 100%). Excellent photocatalytic properties of C₆₀/CNTs/g-C₃N₄ can be predominantly attributed to the intimate interfacial contact among constructing compounds, increased specific surface area and enhanced light adsorption efficiency resulted from C₆₀/CNTs carbon materials. Particularly, the synergistic heterostructure interaction remarkably hinders the electron–hole pairs recombination, giving rise to significantly enhanced photocatalytic performance of C₆₀/CNTs/g-C₃N₄ in comparison with other counterparts.