کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5362430 1388285 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reinforced silver-embedded silica matrix from the cheap silica source for the controlled release of silver ions
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Reinforced silver-embedded silica matrix from the cheap silica source for the controlled release of silver ions
چکیده انگلیسی
In this study, a reinforced silver-embedded silica matrix was designed by utilizing the interaction between the [AlO4]− tetrahedral and the Ag+ in sol-gel process using sodium silicate as a silica precursor. The Ag+ mole ratio in each sample was significantly varied to examine the influence of silver concentration on the properties of the final product. Aluminium ions were added to reinforce and improve the chemical durability of silver-embedded silica. A templated sample at Al/Ag = 1 atomic ratio was also synthesized to attempt a possibility of controlling porosity of the final product. Also, a sample neither embedded with silver nor templated was synthesized and characterized to serve as reference. The material at Al/Ag = 1 was found to have a desirable properties, compared to its counterparts, before and even after calcination up to 1000 °C. The results demonstrate that materials with desirable properties can be obtained by this unprecedented method while utilizing sodium silicate, which is relatively cheap, as a silica precursor. This may significantly boost the industrial production of the silver-embedded silicas for various applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 255, Issue 19, 15 July 2009, Pages 8239-8245
نویسندگان
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