Synthesis of one-dimensional and porous TiO2 nanostructures by controlled hydrolysis of titanium alkoxide via coupling with an esterification reaction

Ziyi Zhong*, Thiam Peng Ang, Jizhong Luo, Hwee Chin Gan, Aharon Gedanken

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

1-Dimensional (1-D) TiO2 nanostructures were prepared by a novel one-pot method, in which the water release was controlled by an esterification reaction between acetic acid and 2-propanol, and the alkoxide was partially coordinated with carboxylic acid, thus the hydrolysis step was significantly slowed. The successive unidirectional growth of TiO2 nanostructures was realized by using aniline, octylamine, and isobutylamine, respectively, as structure-directing agents. After calcination below 400°C, 1-D and porous nanostructures of TiO2 anatase were obtained. Preliminary results showed that Au supported on these TiO2 nanofibers, compared with catalyst using commercial TiO2 as support, has much higher catalytic activity for CO oxidation at near ambient temperature.

Original languageEnglish
Pages (from-to)6814-6818
Number of pages5
JournalChemistry of Materials
Volume17
Issue number26
DOIs
StatePublished - 27 Dec 2005
Externally publishedYes

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