Directional electrons delivery via vertical channel between g-C3N4 layers promoting the photocatalysis efficiency
Suffering from the inefficient charge separation and random charge transfer in the planes of g-C3N4, the photocatalysis efficiency is still unsatisfactory. Herein, this challenged issue is tackled via intercalating alkalis into the interlayer of g-C3N4 to bridge a vertical channel between the layers for directional electrons delivery, which is a novel strategy to effectively quench the charge recombination and promoting the electrons transfer. With a highly combined theoretical and experimental method, the alkalis intercalated g-C3N4 has been designed and fabricated. The alkalis species could suppress the random charge transfer in the planes of g-C3N4 and enable the electrons to directionally migrate between adjacent layers in a one-way transmission manner. As an unprecedented result, the photocatalysis efficiency of g-C3N4 is significantly accelerated by 115.0 % via alkalis intercalation and also stable for recycled usage. This works could provide a feasible protocol for the modification of abundant 2D materials, and shed new light on the understanding of the photocatalysis mechanism.