Engineering Tubular g-C₃N₄ Architectures for Surface-Driven Photocatalysis: A Critical Survey

Area of Science:

• Materials Science
• Nanotechnology
• Photocatalysis

Background:

• Tubular graphitic carbon nitride (g-C₃N₄) offers a unique structure for advanced photocatalytic applications.
• Its multiscale pores, quantum size effects, and geometric asymmetry enhance reactant diffusion and charge kinetics.

Purpose of the Study:

• To review recent advancements in the synthesis and modification of tubular g-C₃N₄.
• To analyze how structural modifications impact photocatalytic performance.

Main Methods:

• Consolidation of template-directed and template-free synthesis routes for tubular g-C₃N₄.
• Analysis of modification strategies: morphological control, doping, defect engineering, and heterojunction construction.

Main Results:

• Synthesis methods allow precise control over tube dimensions and compartmentalization.
• Modifications significantly enhance surface area, light absorption, carrier mobility, and active site density.
• Improved photo-Fenton efficiency and prolonged carrier lifetime were observed.

Conclusions:

• Tubular g-C₃N₄ is a versatile material for photocatalysis with tunable properties.
• Future research should focus on scalable synthesis and mechanistic studies for industrial applications.