Abstract

Yuvita Eka Pertiwi and Maria Ulfa

DOI : http://dx.doi.org/10.13005/ojc/350314

The iron based mesoporous silica (Fe₂O₃/SBA-15) was studied for the first time for adsorption of phenol as a model adsorbate compound. The structural and textural properties of the synthesized samples were characterized by means of X-Ray Diffraction, Transmission Electron Microscopy, FTIR and element analysis techniques by Energy Dispersive X-Ray (EDX). The result of XRD analysis showed that mesoporous SBA-15 silica molecular sieves which modified with Fe₂O₃has a hexagonal structure with a pore size is 4.90 nm and iron contents (25.27%) were found on the surface of the Fe₂O₃/mesoporous silica SBA-15. While the FTIR analysis showed that Fe₂O₃/SBA-15 had functional group of assymetric Si-O-Si and Fe-O-Si which was found at 1085 cm^-1 and 678 cm^-1, respectively. Adsorption performance of Fe₂O₃/SBA-15 material investigated by  phenol compounds as adsorbate model.  The optimum contact time is 60 minutes and the Kinetics model of the mesoporous SBA-15 silica molecular sieves modified Fe₂O₃ can adsorb phenol compounds following the Kinetics Model Ho and McKay. The result optimum adsorption capacity occuring in the adsorption of phenol compounds by of the mesoporous SBA-15 silica molecular sieves modified Fe₂O₃ is 114.000 mg/g.

Adsorption; Fe2O3/SBA-15; Phenol Compounds; Silica Mesoporous

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