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Title: Stabilization of Co{sup 2+} in layered double hydroxides (LDHs) by microwave-assisted ageing

Abstract

Co-containing layered double hydroxides at different pH have been prepared, and aged following different routes. The solids prepared have been characterized by element chemical analysis, powder X-ray diffraction, thermogravimetric and differential thermal analyses (both in nitrogen and in oxygen), FT-IR and Vis-UV spectroscopies, temperature-programmed reduction and surface area assessment by nitrogen adsorption at -196 deg. C. The best conditions found to preserve the cobalt species in the divalent oxidation state are preparing the samples at controlled pH, and then submit them to ageing under microwave irradiation. - Graphical abstract: The use of microwave-hydrothermal treatment, controlling both temperature and ageing time, permits to synthesize well-crystallized nanomaterials with controlled surface properties. An enhancement in the crystallinity degree and an increase in the particle size are observed when the irradiation time is prolonged.

Authors:
 [1];  [1];  [1];  [2]
  1. Departamento de Quimica Inorganica, Universidad de Salamanca, Salamanca-37008 (Spain)
  2. Departamento de Quimica Inorganica, Universidad de Salamanca, Salamanca-37008 (Spain), E-mail: vrives@usal.es
Publication Date:
OSTI Identifier:
21015724
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 180; Journal Issue: 3; Other Information: DOI: 10.1016/j.jssc.2006.12.011; PII: S0022-4596(06)00648-7; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AGING; COBALT; DIFFERENTIAL THERMAL ANALYSIS; FOURIER TRANSFORMATION; HYDROXIDES; INFRARED SPECTRA; IRRADIATION; MICROWAVE RADIATION; NANOSTRUCTURES; NITROGEN; OXYGEN; PARTICLE SIZE; PHYSICAL RADIATION EFFECTS; SPECTROSCOPY; SURFACE AREA; TEMPERATURE RANGE 0065-0273 K; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION

Citation Formats

Herrero, M., Benito, P., Labajos, F.M., and Rives, V. Stabilization of Co{sup 2+} in layered double hydroxides (LDHs) by microwave-assisted ageing. United States: N. p., 2007. Web. doi:10.1016/j.jssc.2006.12.011.
Herrero, M., Benito, P., Labajos, F.M., & Rives, V. Stabilization of Co{sup 2+} in layered double hydroxides (LDHs) by microwave-assisted ageing. United States. doi:10.1016/j.jssc.2006.12.011.
Herrero, M., Benito, P., Labajos, F.M., and Rives, V. Thu . "Stabilization of Co{sup 2+} in layered double hydroxides (LDHs) by microwave-assisted ageing". United States. doi:10.1016/j.jssc.2006.12.011.
@article{osti_21015724,
title = {Stabilization of Co{sup 2+} in layered double hydroxides (LDHs) by microwave-assisted ageing},
author = {Herrero, M. and Benito, P. and Labajos, F.M. and Rives, V.},
abstractNote = {Co-containing layered double hydroxides at different pH have been prepared, and aged following different routes. The solids prepared have been characterized by element chemical analysis, powder X-ray diffraction, thermogravimetric and differential thermal analyses (both in nitrogen and in oxygen), FT-IR and Vis-UV spectroscopies, temperature-programmed reduction and surface area assessment by nitrogen adsorption at -196 deg. C. The best conditions found to preserve the cobalt species in the divalent oxidation state are preparing the samples at controlled pH, and then submit them to ageing under microwave irradiation. - Graphical abstract: The use of microwave-hydrothermal treatment, controlling both temperature and ageing time, permits to synthesize well-crystallized nanomaterials with controlled surface properties. An enhancement in the crystallinity degree and an increase in the particle size are observed when the irradiation time is prolonged.},
doi = {10.1016/j.jssc.2006.12.011},
journal = {Journal of Solid State Chemistry},
number = 3,
volume = 180,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}