Role of urea in the preparation of highly porous nanocomposite aerogels

Casula, M.F. and Loche, D. and Marras, S. and Paschina, G. and Corrias, A. (2007) Role of urea in the preparation of highly porous nanocomposite aerogels. Langmuir, 23 (7). pp. 3509-3512. ISSN 0743-7463. (doi:https://doi.org/10.1021/la0635799) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1021/la0635799

Abstract

The preparation of highly porous CoFe2O4-SiO 2 nanocomposite aerogels was successfully achieved by a novel sol-gel procedure involving urea-assisted co-gelation of the precursor phases. This method allows fast gelation, giving rise to an aerogel with 97% porosity. The formation of CoFe2O4 nanocrystals homogeneously distributed within the matrix occurs after calcination at 750°C and is complete at 900°C. Despite the high temperature required for the formation of the CoFe2O4 nanocrystals, the high porosity typical of aerogels is still retained.

Item Type: Article
Uncontrolled keywords: Calcination, Gelation, Nanocomposites, Nanocrystals, Porous materials, Reaction kinetics, Sol-gel process, Synthesis (chemical), Urea, Nanocomposite aerogels, Precursors, Aerogels
Subjects: Q Science > QC Physics > QC176.8.N35 Nanoscience, nanotechnology
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Anna Corrias
Date Deposited: 16 Dec 2014 15:11 UTC
Last Modified: 04 Dec 2017 12:40 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46175 (The current URI for this page, for reference purposes)
  • Depositors only (login required):