Investigating Methylene Blue Removal from Aqueous Solution by Cysteine-Functionalized Mesoporous Silica

Table 2

Comparison of removal of MB by different functional groups on mesoporous silica surfaces.

Functional group	qe (mg.g^−1)	Ref.
—	140	[48]
—	172	[20]
Amine	13	[27]
Cyclodextrin	60	[49]
Carboxylic	470	[33]
Carboxylic	43	[50]
Chitosan	43	[51]
Sulfonate	208	[52]
Cysteine	140	This study