Urea-Assisted Synthesis of Nanospherical and Plate-Like Magnesium Oxides for Efficient Removal of Reactive Dye Wastes

Table 2

Comparison of adsorption capacities of MgO-NPs synthesized by different method for various types of dyes.

Method	Particle size/nm	Dye	/mg g^-1	Reference
Sol-gel	38	Bromophenol blue	40	[39]
		Fast Orange 3R	30
Green	~10	Congo red	2375	[40]
Hydrothermal	10-20	Methyl orange	370	[41]
		Sudan III	180
		Congo red	471-588
Coprecipitation	19	Reactive black 5	500	[42]
		Reactive Orange 122	333.4
Facile	8.19	Congo red	5000	[43]
Urea assisted	27	Remazol yellow	495	This wok
	23		507