Metal-Free C₆₀-Doped Mesoporous Carbon Nitride Drives Red-Light Photocatalysis

Area of Science:

• Materials Science
• Photocatalysis
• Nanotechnology

Background:

• Graphitic carbon nitride (g-C₃N₄) nanostructures are crucial for photocatalysis.
• Developing high-performance, metal-free photocatalysts is an active research area.
• Red light-driven photocatalysis offers potential for enhanced solar energy utilization.

Purpose of the Study:

• To design and synthesize a novel metal-free photocatalyst by integrating mesoporous carbon nitride (mpg-C₃N₄) with C₆₀.
• To evaluate the photocatalytic performance of the C₆₀/mpg-C₃N₄ composite under red light irradiation.
• To understand the synergistic effects contributing to the enhanced photocatalytic activity.

Main Methods:

• A straightforward and innovative method was employed to synthesize the C₆₀/mpg-C₃N₄ composite.
• Photocatalytic activity was assessed by measuring the photodecomposition rate of rhodamine B (RhB).
• Performance was compared against bulk g-C₃N₄ and pure mpg-C₃N₄.

Main Results:

• The C₆₀/mpg-C₃N₄ composite demonstrated significantly enhanced rhodamine B photodecomposition rates.
• The composite outperformed bulk g-C₃N₄ by over 25.8 times and pure mpg-C₃N₄ by 7.8 times under red light.
• Synergistic effects improved electronic structure, light absorption, active sites, and charge carrier dynamics.

Conclusions:

• A novel, metal-free C₆₀/mpg-C₃N₄ composite photocatalyst was successfully synthesized.
• The composite exhibits superior red light-driven photocatalytic activity for environmental remediation.
• This work provides a promising strategy for efficient solar energy utilization in photocatalysis.