Synthesis and Characterization of Mesoporous Silica SBA-15 and ZnO/SBA-15 Photocatalytic Materials from the Ash of Brickyards

Table 2

The comparison of the maximum adsorption capacity of MB on ZnO/SBA-15 material with other adsorbents.

Adsorbents	Q (mg·g^−1)	Reference
Mn/MCM-41	131.6	[17]
Porous silicon-carbon-nitrogen hybrid materials	291.8	[18]
ZnO/congo red	43.5	[19]
Zn-doped SiO2/TiO2	20.0	[20]
ZnO/SBA-15	536.7	This work