Templated non-oxide sol-gel preparation of well-ordered macroporous (inverse opal) Ta3N5 films
Templated non-oxide sol-gel preparation of well-ordered macroporous (inverse opal) Ta3N5 films
Reactions of Ta(NMe2)5 and n-propylamine are shown to be an effective system for sol-gel processing of Ta3N5. Ordered macroporous films of Ta3N5 on silica substrates have been prepared by infiltration of such a sol into close-packed sacrificial templates of cross-linked 500 nm polystyrene spheres followed by pyrolysis under ammonia to remove the template and crystallize the Ta3N5. Templates with long-range order were produced by controlled humidity evaporation. Pyrolysis of a sol-infiltrated template at 600 °C removes the polystyrene but does not crystallize Ta3N5, and X-ray diffraction shows nanocrystalline TaN plus amorphous material. Heating at 700 °C crystallizes Ta3N5 while retaining a high degree of pore ordering, whereas at 800 °C porous films with a complete loss of order are obtained.
9994-9999
Mallinson, Christopher F.
f2372d62-5bbd-445b-b40e-4a62db5d9f2f
Gray, Benjamin M.
71191ba3-7aa6-4612-aaf9-f24b8b4f1119
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
McLachlan, Martyn A.
8cdefe50-9bd2-4ed5-81da-c5ebbfd9e2b1
Owen, John R.
067986ea-f3f3-4a83-bc87-7387cc5ac85d
3 September 2013
Mallinson, Christopher F.
f2372d62-5bbd-445b-b40e-4a62db5d9f2f
Gray, Benjamin M.
71191ba3-7aa6-4612-aaf9-f24b8b4f1119
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
McLachlan, Martyn A.
8cdefe50-9bd2-4ed5-81da-c5ebbfd9e2b1
Owen, John R.
067986ea-f3f3-4a83-bc87-7387cc5ac85d
Mallinson, Christopher F., Gray, Benjamin M., Hector, Andrew L., McLachlan, Martyn A. and Owen, John R.
(2013)
Templated non-oxide sol-gel preparation of well-ordered macroporous (inverse opal) Ta3N5 films.
Inorganic Chemistry, 52 (17), .
(doi:10.1021/ic4012718).
Abstract
Reactions of Ta(NMe2)5 and n-propylamine are shown to be an effective system for sol-gel processing of Ta3N5. Ordered macroporous films of Ta3N5 on silica substrates have been prepared by infiltration of such a sol into close-packed sacrificial templates of cross-linked 500 nm polystyrene spheres followed by pyrolysis under ammonia to remove the template and crystallize the Ta3N5. Templates with long-range order were produced by controlled humidity evaporation. Pyrolysis of a sol-infiltrated template at 600 °C removes the polystyrene but does not crystallize Ta3N5, and X-ray diffraction shows nanocrystalline TaN plus amorphous material. Heating at 700 °C crystallizes Ta3N5 while retaining a high degree of pore ordering, whereas at 800 °C porous films with a complete loss of order are obtained.
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ic4012718
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e-pub ahead of print date: 15 August 2013
Published date: 3 September 2013
Organisations:
Electrochemistry
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Local EPrints ID: 356372
URI: http://eprints.soton.ac.uk/id/eprint/356372
ISSN: 0020-1669
PURE UUID: 1bbfa4f8-fd3b-4b5b-a0e4-7941abdd3da5
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Date deposited: 25 Sep 2013 13:00
Last modified: 15 Mar 2024 02:52
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Author:
Christopher F. Mallinson
Author:
Benjamin M. Gray
Author:
Martyn A. McLachlan
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