History of metal free g-C3N4 photocatalysts for hydrogen production: A comprehensive review

Graphitic carbon nitride (g-C3N4) photocatalysts are an excellent material for solar energy conversion applications and environmental remediation. This review looks at the most recent advances in g-C3N4-based material for efficiently creating solar fuel (hydrogen) via photocatalytic water splitting. The synthesis approach, morphology strategies (0D, 1D, 2D, and 3D, g-C3N4), g-C3N4 modification, doping schemes, and heterostructure generation are all discussed in detail. There are also several g-C3N4-related issues raised that impede its overall operation. The most recent advances in g-C3N4-based materials for producing hydrogen, a renewable fuel, are also discussed. Surprisingly, the development in solar H2 generation identified by examining the g-C3N4 materials as the primary photocatalyst has only been researched and addressed. Thus, this evaluation is likely to encourage scientists to increase the usage of g-C3N4-based materials in the manufacture of solar fuel (hydrogen).