Abstract

Maria Ulfaand Arini Miftahul Jannah

DOI : http://dx.doi.org/10.13005/ojc/340145

The uniform mesoporous Fe₂O₃/SBA-15 has been succesfully synthesized by classical impregnation of iron nitrate acid in the presence of mesoporous silica SBA-15 followed by ultrasonication, microwave treatment and calcination. The characterization of mesoporous Fe₂O₃/SBA-15 material structures using FTIR spectroscopy , powder X-Ray Diffraction, Nitrogen adsorption-desorption, Transmission Electron Microscopy, and Energy Dispersive X-Ray. The result of FTIR analysis showed that mesoporous Fe₂O₃/SBA-15 silica material sieves had silanol (Si-OH), siloxyl (Si-O-Si), and Fe-O, while the XRD analysis showed that iron oxide was completely impregnated on mesoporous silica SBA-15 surface. Nitrogen adsorption-desorption analysis showed that surface area of mesoporous Fe₂O₃/SBA-15 material was 479 m2/g with volume of 0.87 cm³/ g, and a pore diameter of 6.50 nm. Adsorption Performance of Fe₂O₃/SBA-15 material investigated by using nickel (II) ions as adsorbate model. The optimum contact time result was analyzed with adsorption kinetics model. The optimum contact time of adsorption of Fe₂O₃/SBA-15 mesoporous material to Ni (II) ion was 240 minutes with optimum adsorption capacity of 352.982 mg / g. The optimum contact time data shows that the Fe₂O₃/SBA-15 silica mesoporous material in adsorption of nickel (II) ions follows the Lagergren kinetic model.

Mesoporous Silica SBA-15; Iron Oxide; Wet Impregnation; Ultrasonic; Microwave; Adsorption; Niickel Ions

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