Table 13.

Decomposition rate/degradation efficiency of metal oxides.

Nanocomposite Material	Role of Metal Oxide	Degraded Material	Decomposition Rate (min−1)/Degradation Efficiency (%)	Reference
ZnO@C	Photocatalytic degradation of methylene blue	Methylene blue (MB)	99.8%	[194]
Cerium zirconium oxide (CexZryO2)	Photocatalytic degradation of sulfonamides	Sulfonamides	91.33%	[195]
ZnO/Al2O3	Wastewater treatment	Methyl orange dye (MO), TOC	TOC: 80.4%	[196]
NiO nanobelt	Removal of organic pollutants such as RhB, MO, MB, and CV	Removal of organic pollutants	RhB: 89% CV: 76.7% MB: 82.7% MO: 79.1%	[204]