Graphitic carbon nitride mesoporous nanosheets: Synthesis, characterization and investigation of optical and photocatalytic properties in comparison with bulk graphite carbon nitride
Subject Areas :
Marzieh Khademalrasool
1
(Jundi-Shapur University of Technology, Dezful, Iran)
Alireza Davoudi Yeganeh
2
(Jundi-Shapur University of Technology, Dezful, Iran)
Keywords: g-C3N4 mesoporous nanosheets, photocatalysis, Pyrolysis, Soft template, Ammonium chloride.,
Abstract :
In this research, g-C3N4 mesoporous nanosheets were synthesized using the pyrolysis method of melamine and ammonium chloride as a soft template. Then, the synthesized samples were accurately characterized. The photocatalytic performance of the synthesized samples was investigated for the degradation of MB dye. The findings showed that the mesoporous nanosheets had the highest effective surface area (11.5 times) and the highest pore volume (5.3 times) compared to the bulk g-C3N4 sample, which was a significant increase. Increasing the specific surface will be useful for mass transfer and provide active sites for oxidation-reduction reactions. Therefore, these mesoporous nanosheets showed the best photocatalytic performance compared to the bulk g-C3N4 (5 times). Furthermore, the photochemical stability were well maintained after three photocatalytic reaction cycles. The increase in the activity of g-C3N4 mesoporous nanosheets can be mainly attributed to the increase in the effective surface area of the samples, the long lifetime and the ability to improve the oxidation of charge carriers due to the unique electronic structure. Since this synthesis method of g-C3N4 mesoporous nanosheets with high efficiency is simple, g-C3N4 mesoporous nanosheets can also be used in environmental purification and solar energy conversion.
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