Table 12. List of Some Important Examples of Hydrogen Generation through Water-Splitting Reaction Using GO-Based Photocatalysts.

Photocatalyst	Preparation methods	Photocatalytic efficiency	Refs
Dye-sensitized GO	Hummers method	-	(188)
S,N-codoped GO quantum dots	Hydrothermal method	6.138 mol/h/g	(33)
Copper phthalocyanine@GO/TiO2	Microwave+sonication	1.65 mmol	(34)
NixCo1–xP/rGO/g-C3N4	Calcination	576.7 μmol/h/g	(189)
GO–CdS–Pt nanocomposite	Reduction of formic acid and two-phase mixing method	123 mL/h/g	(35)
rGO/Pt–TiO2 nanocomposite	Hummers method	1075.68 μmol/h/g	(187)
Cu2ZnSnS4/MoS2-rGO heterostructure	Hummers method	52 μmol/h/g	(190)
NiO@Ni-ZnO/rGO/CdS heterostructure	Hummers method	824 μmol/h/100 mg	(186)
CuS-modified ZnO rod/rGO/CdS heterostructure	Hummers method	1073 μmol/h/g	(191)
Au@Pt-N-doped La2Ti2O7/rGO		-	(192)
ZnS–CdS/GO heterostructure	Hummers method	1.68 mmol/h	(193)
TiO2/Pt/rGO composite	Hydrothermal method	-	(194)
AgBr/polyoxometalate/GO	Ionic liquid assisted hydrothermal method	256 μmol/h/g	(195)
rGO-supported g-C3N4-TiO2	Ultrasound-assisted simple wet impregnation method	23 143 μmol/h/g	(196)
CdS nanorods decorated by thin MoS2 layer rGO nanohybrids	Ultrasonication followed by distillation	234 mmol/h/g	(197)