Dear Sana Kanwal thank you for your interesting technical question. For a detailed experimental procedure please see the following useful article entitled
Novel mesoporous Fe3O4/SiO2/CTAB–SiO2 as an effective adsorbent for the removal of amoxicillin and tetracycline from water
Article Novel mesoporous Fe3O4/SiO2/CTAB–SiO2 as an effective adsorb...
This paper is freely available as public full text on ResearchGate.