%0 Journal Article
%T Optimization of preparation conditions of ZnO每SiO2 xerogel by sol每gel technique for photodegradation of methylene blue dye
%A R. M. Mohamed
%A E. S. Baeissa
%A I. A. Mkhalid
%A M. A. Al-Rayyani
%J Applied Nanoscience
%@ 2190-5517
%D 2013
%I 
%R 10.1007/s13204-012-0074-z
%X The ZnO每SiO2 xerogel photocatalyst was prepared via the sol每gel technique and applied for photodegradation of methylene blue (MB) dye. The optimum conditions for preparation of ZnO每SiO2 gel is 30:70 ZnO:SiO2 molar ratio and TEOS:C2H5OH:H2O:HNO3 is 1:16:12:0.04 molar ratios at 30∼C for 30 min, at these conditions the photoactivity of ZnO每SiO2 xerogel was 99% at a surface area of 500 m2/g after 60 min. The optimum loading of ZnO每SiO2 photocatalyst was 0.050 wt% that gives 99% MB dye removal efficiency after 40 min. The overall kinetics of photodegradation of MB dye using ZnO每SiO2 photocatalyst was found to be of the first order.
%K Sol每gel
%K Nanoparticles
%K ZnO每SiO2
%K Photocatalysis
%K Methylene blue dye
%U http://link.springer.com/article/10.1007/s13204-012-0074-z