Nandy, Sayani and Kundu, Debtosh and Naskar, Milan Kanti (2014) Synthesis of mesoporous Stober silica nanoparticles: the effect of secondary and tertiary alkanolamines. Journal of Sol-Gel Science and Technology, 72 (1). pp. 49-55. ISSN 0928-0707

PDF - Published Version Restricted to Registered users only Download (621Kb) | Request a copy

Abstract

The effect of secondary (diethanolamine) and tertiary (triethanolamine) alkanolamines as catalysts on the formation of mesoporous Stober silica nanoparticles by sol-gel method was studied. The particles were characterized by thermogravimetry and differential thermal analysis, Fourier transform infrared spectroscopy, N-2 physisorption measurements, and field emission scanning electron microscopy. By using ammonia and different alkanolamines as catalysts, the Brunauer-Emmet-Teller (BET) surface area and pore volume increased in the order of ammonia < diethanolamine < triethanolamine. A maximum BET surface area of 140.1 m(2) g(-1) and pore volume of 0.66 cm(3) g(-1) were obtained from triethanolamine catalyzed silica particles. The average particle size of silica prepared by ammonia and different alkanolamines as catalysts decreased in the order of ammonia > diethanolamine > triethanolamine. The role of different alkanolamines on the textural properties and particle size of silica is explained in terms of their relative steric hindrance and basicity.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Sol Gel
Depositing User:	Bidhan Chaudhuri
Date Deposited:	17 Nov 2014 09:52
Last Modified:	17 Nov 2014 09:52
URI:	http://cgcri.csircentral.net/id/eprint/2536

Actions (login required)

View Item