ol – gel Method was used for the preparation of bisbenzimide H33258doped silica xerogels film , using tetraethylorthosilicate
[TEOS, Si(OC2H5)4] as the precursor for the silica network. Silica alcogol was prepared by hydrolysis and polycondensation of
ethanol (EtOH) diluted TEOS in the presence of HCL catalyst. Silica solution containing TEOS and pure ethonal were mixed
in volume ratio of 5:5 the sol(A) ,and deionized water mixed with HCL and dye solution at volume ratio 10:0.81(0.1M):5 the
sol(B) .sol (B) were slowly added to sol(A) with magnetic stirring for two hour at the tamp. of reaction 60ₒC.From the
absorption spectra for organic dyes in ethanol it is clearly appear that the dye molecules interactions depend on the local
electric fields generated by the surrounding polar solvent molecules. The change spectrum width and the intensity of peak for
different concentrations.
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تاريخ النشر
20/05/2014
الناشر
IPASJ International Journal of Mechanical Engineering (IIJME)
سيناء ابراهيم حسين | Seenaa Ibraheim Hussein | 5422