In this research prepartion of curcumin-silica materials using sol-gel method (bio-based materials)by
reaction phenolic hydroxy group of curcumin with silanol group of silica . Tetraethoxysilane (TEOS ) was used as the
silica precursor, hydrochloric acid (HCl) ,as the catalyst .Curcumin form as the organic precursor, Curcumin was
dissolved in THF ( concentration of 10 wt%). 1 gm curcuim dissolved 10 ml THF , The mixture was stirred under
nitrogen until the curcumin dissolved completely to give a clear yellow solution. TEOS + HCl (0.1M) ) solution was
added drop by drop to the cucumin solution under continuous stirring to give four different organic/inorganic ratios
(15%,25%,35%, and 50% v/v). The results show that the absorption peak shift with red shift and the Fluorescence
Spectrophotometer ,silica-curcumin materials were showed ablue shifted peak. DTA thermograph shows sharp
endothermic peak this can be attributed to the vaporization of water and ethanol.
I.
تاريخ النشر
21/02/2015
الناشر
International Journal of Advanced Research in Science, Engineering and Technology
سيناء ابراهيم حسين | Seenaa Ibraheim Hussein | 5458