Table 3.

Adsorption capacities of chitosan-based hybrids for MO adsorption

Adsorbent	Conditions	Maximum adsorption (mg/g)	References
Chitosan/silica nanocomposite	Adsorbent dosage = 0.5 g/L, pH = 7, time = 60 min. and MB concentration = 900 ppm	848	[32]
N-guanidinium chitosan/silica hybrid	Adsorbent dosage = 0.5 g/L, pH = 7, time = 90 min. and MB concentration = 600 ppm	334	here
Chitosan/silica/ZnO nanocomposite	Adsorbent dosage = 0.5 g/L, pH = 7, time = 70 min. and MB concentration = 550 ppm	293	[33]
Chitosan/Azadirachta indica leaves/Kaolinite nanocomposite	Adsorbent dosage = 0.02 g/L, pH = 7, equilibrium time = 240 min. and MB concentration = 100 ppm	224	[34]
Chitosan–montmorillonite/polyaniline nanocomposite	Adsorbent dosage = 0.025 g, time = 120 min., and MB concentration = 20 ppm	111	[35]
Graphene oxide/chitosan composite aerogel	Adsorbent dosage = 0.8 g/L, pH = 11, time = 80 min. and MB concentration = 200 ppm	110	[36]