Two-stage, non-hydrolytic synthesis for improved control of TiO2 nanorod formationElectronic supplementary information (ESI) available. See DOI: 10.1039/c2jm30922j

TiO 2 anatase nanorods were grown via the non-hydrolytic elimination reaction between TiCl 4 and Ti(O i Pr) 4 in the presence of oleic acid. The reaction was carried out in two stages in order to separate TiO x seed nucleation at lower temperatures from nanorod growth at higher temperatures. This se...

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Bibliographic Details
Main Authors: Menzel, Robert, Cottam, Ben F, Ziemian, Sabina (Chy a), Shaffer, Milo S. P
Format: Article
Language:English
Online Access:Get full text
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Summary:TiO 2 anatase nanorods were grown via the non-hydrolytic elimination reaction between TiCl 4 and Ti(O i Pr) 4 in the presence of oleic acid. The reaction was carried out in two stages in order to separate TiO x seed nucleation at lower temperatures from nanorod growth at higher temperatures. This separation made it possible to study the crystal growth mechanism in more detail, indicating that nanorod formation occurred through a combination of atom-by-atom addition and oriented attachment of the initial seeds. The two-stage reaction approach also enabled considerably improved control of titania nanorod formation in terms of product morphology, crystallinity and uniformity. The effects of a range of reaction parameters, including reaction duration, temperature, dilution and stoichiometry, were investigated. Separating seed nucleation from anisotropic crystal growth opens-up new opportunities to control the morphology and formation mechanism of TiO 2 nanorods.
ISSN:0959-9428
1364-5501
DOI:10.1039/c2jm30922j