Hydrogen production and photocatalytic activity of g‐C<sub>3</sub>N<sub>4</sub>/Co‐MOF (ZIF‐67) nanocomposite under visible light irradiation
Kamakshaiah Charyulu Devarayapalli, S.V. Prabhakar Vattikuti, T.V.M. Sreekanth, Ki Soo Yoo, P. C. Nagajyothi, Jaesool Shim
Abstract
Herein, cobalt (Co)‐based metal–organic zeolitic imidazole frameworks (ZIF‐67) coupled with g‐C 3 N 4 nanosheets synthesized via a simple microwave irradiation method. SEM, TEM and HR‐TEM results showed that ZIF‐67 were uniformly dispersed on g‐C 3 N 4 surfaces and had a rhombic dodecahedron shape. The photocatalytic properties of g‐C 3 N 4 /ZIF‐67 nanocomposite were evaluated by photocatalytic dye degradation of crystal violet (CV), 4‐chlorophenol (4‐CP) and photocatalytic hydrogen (H 2 ) production. In presence of visible light illumination, the photocatalytic dye results showed that 95% CV degradation and 53% 4‐CP degradation within 80 min. The H 2 production of the g‐C 3 N 4 /ZIF‐67 composite was 2084 μmol g −1 , which is 3.84 folds greater than that of bare g‐C 3 N 4 (541 μmol g −1 ).