Two dimensional C3N4 nanoplatelets produced by unzipping of C3N4 nanotubes

초록

Two-dimensional carbon nitride (2D C3N4) materials have emerged as highly promising candidates for photo-catalytic and electrocatalytic applications due to their large surface area, tunable electronic properties, and enhanced charge transport. In this study, we report a novel strategy for synthesizing 2D C3N4 nanoplatelets (Un-CN) via acid-assisted unzipping of one-dimensional (1D) C3N4 nanotubes. The resulting Un-CN materials exhibit excellent dispersibility in various solvents and blue luminescence. From comprehensive analyses, it is revealed that Un-CN possesses a suitable band structure for visible-light absorption, long-lived charge carriers, and efficient charge transfer pathways. Un-CN demonstrates a superior photocatalytic efficiency and stability for the degradation of Rhodamine B under visible-light irradiation, outperforming bulk and 1D counterparts. Furthermore, electrochemical evaluations confirm outstanding electrocatalytic activities of Un-CN for hydrogen and oxygen evolution. This work presents a scalable approach of engineering 2D C3N4 nanostructures with exceptional catalytic properties and its great potential as a platform for various catalytic applications.

키워드