Investigating the Mesostructure of Ordered Porous Silica Nanocomposites by Transmission Electron Microscopy Techniques

S. Bullita; M. Piludu; Andrea Falqui; D. Carta; A. Corrias; M. F. Casula

doi:10.1063/1.4900450

Investigating the Mesostructure of Ordered Porous Silica Nanocomposites by Transmission Electron Microscopy Techniques

S. Bullita, M. Piludu, Andrea Falqui, D. Carta, A. Corrias, M. F. Casula

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Nanocomposites made out of FeCo alloy nanocrystals supported onto pre-formed mesoporous ordered silica which features a cubic arrangement of pores (SBA-16) were investigated. Information on the effect of the nanocrystals on the mesostructure (i.e. pore arrangement symmetry, pore size, and shape) were deduced by a multitechnique approach including N2 physisorption, low angle X-ray diffraction, and Transmission electron microscopy. It is shown that advanced transmission electron microscopy techniques are required, however, to gain direct evidence on key compositional and textural features of the nanocomposites. In particular, electron tomography and microtomy techniques make clear that the FeCo nanocrystals are located within the pores of the SBA-16 silica, and that the ordered mesostructure of the nanocomposite is retained throughout the observed specimen.

Original language	English (US)
Title of host publication	AIP Conference Proceedings
Publisher	AIP Publishing LLC
Pages	10-14
Number of pages	5
DOIs	https://doi.org/10.1063/1.4900450
State	Published - Feb 17 2015

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10.1063/1.4900450

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title = "Investigating the Mesostructure of Ordered Porous Silica Nanocomposites by Transmission Electron Microscopy Techniques",

abstract = "Nanocomposites made out of FeCo alloy nanocrystals supported onto pre-formed mesoporous ordered silica which features a cubic arrangement of pores (SBA-16) were investigated. Information on the effect of the nanocrystals on the mesostructure (i.e. pore arrangement symmetry, pore size, and shape) were deduced by a multitechnique approach including N2 physisorption, low angle X-ray diffraction, and Transmission electron microscopy. It is shown that advanced transmission electron microscopy techniques are required, however, to gain direct evidence on key compositional and textural features of the nanocomposites. In particular, electron tomography and microtomy techniques make clear that the FeCo nanocrystals are located within the pores of the SBA-16 silica, and that the ordered mesostructure of the nanocomposite is retained throughout the observed specimen.",

author = "S. Bullita and M. Piludu and Andrea Falqui and D. Carta and A. Corrias and Casula, {M. F.}",

note = "KAUST Repository Item: Exported on 2022-11-24 Acknowledgements: This work has been supported by the Regione Autonoma della Sardegna (L.R.7/2007) under projects CRP-18013 and CRP-26449",

year = "2015",

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doi = "10.1063/1.4900450",

language = "English (US)",

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T1 - Investigating the Mesostructure of Ordered Porous Silica Nanocomposites by Transmission Electron Microscopy Techniques

AU - Bullita, S.

AU - Piludu, M.

AU - Falqui, Andrea

AU - Carta, D.

AU - Corrias, A.

AU - Casula, M. F.

N1 - KAUST Repository Item: Exported on 2022-11-24 Acknowledgements: This work has been supported by the Regione Autonoma della Sardegna (L.R.7/2007) under projects CRP-18013 and CRP-26449

PY - 2015/2/17

Y1 - 2015/2/17

N2 - Nanocomposites made out of FeCo alloy nanocrystals supported onto pre-formed mesoporous ordered silica which features a cubic arrangement of pores (SBA-16) were investigated. Information on the effect of the nanocrystals on the mesostructure (i.e. pore arrangement symmetry, pore size, and shape) were deduced by a multitechnique approach including N2 physisorption, low angle X-ray diffraction, and Transmission electron microscopy. It is shown that advanced transmission electron microscopy techniques are required, however, to gain direct evidence on key compositional and textural features of the nanocomposites. In particular, electron tomography and microtomy techniques make clear that the FeCo nanocrystals are located within the pores of the SBA-16 silica, and that the ordered mesostructure of the nanocomposite is retained throughout the observed specimen.

AB - Nanocomposites made out of FeCo alloy nanocrystals supported onto pre-formed mesoporous ordered silica which features a cubic arrangement of pores (SBA-16) were investigated. Information on the effect of the nanocrystals on the mesostructure (i.e. pore arrangement symmetry, pore size, and shape) were deduced by a multitechnique approach including N2 physisorption, low angle X-ray diffraction, and Transmission electron microscopy. It is shown that advanced transmission electron microscopy techniques are required, however, to gain direct evidence on key compositional and textural features of the nanocomposites. In particular, electron tomography and microtomy techniques make clear that the FeCo nanocrystals are located within the pores of the SBA-16 silica, and that the ordered mesostructure of the nanocomposite is retained throughout the observed specimen.

UR - http://hdl.handle.net/10754/670632

UR - http://aip.scitation.org/doi/abs/10.1063/1.4900450

U2 - 10.1063/1.4900450

DO - 10.1063/1.4900450

M3 - Conference contribution

SP - 10

EP - 14

BT - AIP Conference Proceedings

PB - AIP Publishing LLC

ER -

Investigating the Mesostructure of Ordered Porous Silica Nanocomposites by Transmission Electron Microscopy Techniques

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