Ghosh, Sourav and Naskar, Milan Kanti (2013) Solvothermal conversion of nanofiber to nanorod-like mesoporous-Al2O3 powders, and study their adsorption efficiency for congo red. Journal of the American Ceramic Society, 96 (6). pp. 1698-1701. ISSN 0002-7820

PDF - Published Version Restricted to Registered users only Download (906Kb) | Request a copy

Abstract

Mesoporous -Al2O3 powders with nanofiber and nanorod-like structures were synthesized using boehmite sols in the presence of triblock copolymer, P123 in ethanol by solvothermal process at different temparatures (100 degrees C-165 degrees C) followed by calcination at 400 degrees C-1000 degrees C. The powders were characterized by low- and wide-angle X-ray diffraction (XRD), N2 adsorption-desorption, and transmission electron microscopy (TEM). The adsorption efficiency of the powders with Congo red (CR) was studied by UV-vis spectroscopy. The -Al2O3 phase became stable up to 1000 degrees C. The nanorods obtained at 165 degrees C had narrower pore size distribution (PSD) than nanofibers synthesized at 100 degrees C, the former showed higher CR adsorption efficiency. The stepwise growth mechanism of nanofibers to nanorods conversion with increase in solvothermal temperatures was illustrated.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Sol Gel
Depositing User:	Bidhan Chaudhuri
Date Deposited:	10 Sep 2013 08:46
Last Modified:	10 Sep 2013 08:46
URI:	http://cgcri.csircentral.net/id/eprint/2125

Actions (login required)

View Item