عنوان المقالة:Encapsulation of methyl orange pH-indicator into a sol-gel matrix
أ.د نظام محمود الأشقر | Prof. Nizam M. El-Ashgar | 12317
Publication Type
Journal
Arabic Authors
Farid R Zaggout, Nizam M El-Ashgar, Shehata M Zourab, Issa M El-Nahhal, Hanan Motaweh
Abstract
The acid catalyzed sol-gel reaction was used to encapsulate methyl orange pH-indicator into transparent monolithic silica matrices. Tetraethylorthosilicate was used for the entrapment of the methyl orange indicator. The immobilized methyl orange shows similar behavior as its solution counterpart. It retains its structure during the sol-gel reactions in terms of response to pH. The surface morphology indicates that the methyl orange molecules are weakly interacted within the host silica network. This study shows that the methyl orange pH-indicator can be doped into sol-gel silica matrix and used for sensing pH as a solid indicator.
Publication Date
10/31/2005
Publisher
Materials Letters, Science Direct
DOI
https://do
External Link
http://www.sciencedirect.com/science/article/pii/S0167577X05004374
Keywords
Methyl orange pH-indicator, Sol-gel encapsulation, Immobilization of indicators, Polysiloxane entrap
رجوع