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Nickel-based nanocrystals dispersed on SBA-16 gels: synthesis and structural characterization

Carta, Daniela, Loche, D, Casula, MF, Oláh, N, Olasz, D and Corrias, A (2014) Nickel-based nanocrystals dispersed on SBA-16 gels: synthesis and structural characterization Journal of Non-Crystalline Solids, 401. pp. 134-138.

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Porous monoliths of nanocomposites containing Ni (5 wt.%) and FeNi (5 wt.%) nanoparticles dispersed on an SBA-16 type matrix were prepared following a templated-gelation method based on the sol–gel process. The nanocomposites were characterized by energy dispersive X-ray spectroscopy, N2 physisorption at 77 K, X-ray diffraction and transmission and scanning electron microscopy. In particular, N2 physisorption and transmission electron microscopy analysis show that the ordered mesoporous structure and the high surface area of all the samples are preserved after calcination in air at 500 °C and also after reduction in H2 flux at 800 °C, indicating a very high thermal stability of the samples. As a result of the effective dispersion of the nanophase within the porous texture, nanocomposites containing Ni nanocrystals with an average size of 6 nm homogeneously dispersed within the pores of the amorphous silica matrix were obtained.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
Loche, D
Casula, MF
Oláh, N
Olasz, D
Corrias, A
Date : 19 January 2014
Copyright Disclaimer : © 2014 Elsevier B.V. All rights reserved.
Uncontrolled Keywords : Mesoporous silica; SBA-16Sol–gel; Nanocomposites
Depositing User : Jane Hindle
Date Deposited : 29 Aug 2017 15:14
Last Modified : 16 Jan 2019 18:55

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