LAUSR

AbstractSupported metal oxides (CaO and MgO) mesoporous silica were synthesized using impregnation method. Curcumin uptake capacity by metal oxides (CaO and MgO) supported mesoporous silica were determined using batch method. The structural properties of these materials were investigated using several characterization techniques such as FTIR, XRD, SAXS, TEM, TGA, and UV-vis. UV-vis analysis shows that curcumin have higher uptake capacity for CaO than MgO/mesoporous silica. It also found that the hexagonal-SiO2-SBA-15 have the highest capacity for curcumin than other lamellar-SiO2 structures. Supported metal oxides of two types mesoporous silica structures(hexagonal and lamellar) are prepared by impregnation method. Metal(II) curcumin complexes are formed upon treatment of curcumin with supported metal oxides mesoporous silica.HighlightsMetal oxides (CaO and MgO) supported mesoporous silica were synthesized via impregnation method.Curcumin uptake capacity is depended on the nature of metal oxide and the type of mesoporous silica.Free curcumin was released from mesoporous silica by treatment of immobilized Ca(II) & Mg(II) curcumin complexes with HCl.SAXS and TEM results showed that metal oxides are introduced into the mesoporous silica network.XRD showed that all metal oxides were in crystalline form faced center cubic CaO and MgO.