Application of Graphdiyne in Photocatalysis

Graphdiyne (GD) is one of carbon allotropes with the unique structure and has ideal high strength, excellent light transmittance, electrical conductivity, high carrier mobility, and thermal conductivity. GD with a natural band gap is an intrinsic semiconductor with special charge transport properties. GD shows a band gap in the range of 0.45 to 1.30 eV, compared with graphene without band gap, which has a promising potential for electronic, catalytic, optical and mechanical applications. Also, GD has two different Dirac cones near the top and bottom of the Fermi energy level, indicating that GD is a self-doped semiconductor with charge carriers and does not require additional doping like graphene. GD can be used as a potential and excellent photocatalytic material, and theoretically it is needed to be modified to build active sites for efficient photo-induced reactions.