Speciation in diethanolamine-moderated TiO2 precursor sols and their use in film formation
Speciation in diethanolamine-moderated TiO2 precursor sols and their use in film formation
The phase behaviour of TiO2 films and powders produced from Ti(OiPr)4-based sols in ethanol modified with diethanolamine is investigated. The anatase/rutile phase concentrations vary with conditions and are correlated with samples from an acid-catalysed sol used in the same way to make films and powders. Diethanolamine is effective in increasing smoothness of films and reducing cracking, but also results in rutile formation when samples are heated at 600 °C. Mass spectrometry and nuclear magnetic spectroscopy were used to interrogate the species present in solution, where specific cluster types were found to be prominent and the diethanolamine was shown to coordinate to titanium to via all three donor atoms.
1-22
Al-Arjan, Wafa
46e5a55e-c0b2-4509-ab95-4f97f5c0c5c0
Hector, Andrew
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Al-Arjan, Wafa
46e5a55e-c0b2-4509-ab95-4f97f5c0c5c0
Hector, Andrew
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Al-Arjan, Wafa, Hector, Andrew and Levason, William
(2016)
Speciation in diethanolamine-moderated TiO2 precursor sols and their use in film formation.
Journal of Sol-Gel Science and Technology, .
(doi:10.1007/s10971-016-4032-1).
(In Press)
Abstract
The phase behaviour of TiO2 films and powders produced from Ti(OiPr)4-based sols in ethanol modified with diethanolamine is investigated. The anatase/rutile phase concentrations vary with conditions and are correlated with samples from an acid-catalysed sol used in the same way to make films and powders. Diethanolamine is effective in increasing smoothness of films and reducing cracking, but also results in rutile formation when samples are heated at 600 °C. Mass spectrometry and nuclear magnetic spectroscopy were used to interrogate the species present in solution, where specific cluster types were found to be prominent and the diethanolamine was shown to coordinate to titanium to via all three donor atoms.
Text
__soton.ac.uk_ude_personalfiles_users_uccaalh_mydocuments_3 Papers_Titania_TiO2 JSGST accepted version.pdf
- Accepted Manuscript
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Accepted/In Press date: 25 March 2016
Organisations:
Electrochemistry, Organic Chemistry: SCF
Identifiers
Local EPrints ID: 390474
URI: http://eprints.soton.ac.uk/id/eprint/390474
ISSN: 0928-0707
PURE UUID: 272c7290-0785-43b5-a88f-fe2e51b07bf4
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Date deposited: 04 Apr 2016 09:20
Last modified: 15 Mar 2024 05:27
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Author:
Wafa Al-Arjan
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