Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 112, Issue 2, Pages 398-401Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2008.05.066
Keywords
Nanostructures; Non-crystalline materials; Sol-gel growth; Nuclear magnetic resonance (NMR)
Categories
Funding
- National Natural Science Foundation of China [20576058]
Ask authors/readers for more resources
The silica aerogel was prepared by a sol-gel process followed the drying process at atmospheric pressure and 40 degrees C. The silicon source was the rice hull ash, which is an agricultural waste and rich in silicon. The rice hull ash was extracted with sodium hydroxide solution to get a sodium silicate solution. The solution was neutralized with sulfuric acid solution to form silica hydrosol, which was immediately added appropriate quantity of tetraethyl orthosilicate (TEOS), and then gelated to be a gel. The aged gel was washed successively by water and ethanol, and finally dried at the atmosphere. The prepared material was characterized using transmission electron microscope (TEM) and Brunauer-Emmett-Teller (BET) measurements. The specific surface area of the prepared material is high as 500 m(2)/g with a bulk density of 0.33 g/cm(3). The diameters of the pores inside the prepared materials are between 5 and 60 nm. (c) 2008 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available