Photocatalytic Applications of Heterostructure Graphitic Carbon Nitride: Pollutant Degradation, Hydrogen Gas Production (water splitting), and CO2 Reduction

Table 3 Studies of g-C₃N₄ heterojunctions on Carbon dioxide (CO₂) reduction

Photocatalyst	Source of light	Application	Performance	Ref.
g-C₃N₄/ZnO	300-W Xenon arc lamp	CO₂ reduction	0.6 μmol h⁻¹g⁻¹ CH₃OH	[124]
SnO_2-X/g-C₃N₄	500-W Xenon lamp	CO₂ reduction	22.7 μmol h⁻¹ g⁻¹ CO, CH₃OH, CH₄	[125]
BiOI/g-C₃N₄	300-W Xenon arc lamp (λ > 400-nm cut-off filter)	CO₂ reduction	17.9 μmol g⁻¹ CO	[61]