Optoelectronics Study of Graphitic Carbon Nitride for Tuning Bandgap: A Review

Parveen Ansari1*, Kamal Kumar Kushwah1, Hussain Jeevakhan2

Department of Applied Physics. Jabalpur Engineering College, MP, India

Department of Applied Sciences, National Institute of Technical Teacher Training and Research, Bhopal, MP, India

Abstract

The extraordinary semiconductor catalyst, graphitic carbon nitride (g-C3N4), has garnered considerable interest as a low-cost, metal-free, and visible light-responsive material. Due to its small surface area, rapid recombination of photogenerated electron-hole pairs, and limited absorption of visible light, Pristine g-C3N4 exhibits poor photocatalytic efficiency. This review discusses the latest developments,
viewpoints, and enduring difficulties in the creation of photocatalytic materials based on g-C3N4.
Numerous techniques, including co-doping, heterojunction engineering, and metal and non-metal doping, are used to increase the materials' absorption of visible light. Overall, it was found that these methods enhanced the photocatalytic performance by reducing the bandgap of the material, increasing the surface area, reducing charge carrier recombination, and promoting the absorption of visible light.
The material has been widely employed for a variety of purposes, including water purification, CO2 conversion, water splitting, and photocatalytic hydrogen generation. Additionally, the work has pointed out a number of the material's shortcomings and limits that prevent it from being used to its full potential in visible light and has provided newly published state-of-the-art remedies. Research on photocatalysis
would greatly benefit from the overview provided in this paper, which would also make it easier to create effective visible light-responsive semiconductor materials.

Keywords: - Nanocomposites, Optoelectronics, XRD, FTIR, Photoluminescence.

References: - 1. Rui Zou, Yanjun Lin, and Chao Lu, Nitrogen Vacancy Engineering in Graphitic Carbon Nitride for Strong,
Stable, and Wavelength Tunable Electrochemiluminescence Emissions, Anal. Chem., 93, 2678−2686, January 2021.
2. Theo Suter, Veronika Brázdová, Kit McColl, Thomas S. Miller, Hiroki Nagashima, Enrico Salvadori, Andrea Sella,
Christopher A. Howard, Christopher W. M. Kay, Furio Corà, and Paul F. McMillan, Synthesis, Structure and Electronic
Properties of Graphitic Carbon Nitride Films, J. Phys. Chem. C, 122, 25183−25194, October, 2018.
3. Bohayra Mortazavi, Gianaurelio Cuniberti, Timon Rabczuk, Mechanical properties and thermal conductivity of graphitic
carbon nitride: A molecular dynamics study, Computational, Volume 99, Pages 285-289, March 2015.