Synthesis of monodisperse mesoporous TiO2 spheres with tunable sizes between 0.6 and 3.1 μm and effects of reaction temperature, Ti source purity, and type of alkylamine on size and monodispersity

Myun Pyo Hong; Jang Yong Kim; Koteswararao Vemula; Hyun Sung Kim; Kyung Byung Yoon

doi:10.1039/C2CC30391D

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Synthesis of monodisperse mesoporous TiO₂ spheres with tunable sizes between 0.6 and 3.1 μm and effects of reaction temperature, Ti source purity, and type of alkylamine on size and monodispersity†

Myun Pyo Hong,^a Jang Yong Kim,^a Koteswararao Vemula,^a Hyun Sung Kim^a and Kyung Byung Yoon*^a

Author affiliations

* Corresponding authors

^a Korea Centre for Artificial Photosynthesis, Centre for Microcrystal Assembly, Centre for Nanomaterials, Department of Chemistry, Sogang University, Seoul, Korea
E-mail: yoonkb@sogang.ac.kr
Fax: +82-2-706-4269

Abstract

We report a novel method for synthesizing monodisperse mesoporous TiO₂ spheres (sizes = 0.6–3.1 μm) by hydrolysis of titanium isopropoxide (TIP) in a mixture of C₈–C₁₆n-alkylamine, water, and ethanol. The size increases with decreasing temperature, TIP concentration, and water concentration, and upon purifying TIP. n-Dodecylamine gives the highest monodispersity.

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Article information

DOI: https://doi.org/10.1039/C2CC30391D
Article type: Communication
Submitted: 17 Jan 2012
Accepted: 06 Mar 2012
First published: 06 Mar 2012

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Chem. Commun., 2012,48, 4250-4252

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Synthesis of monodisperse mesoporous TiO₂ spheres with tunable sizes between 0.6 and 3.1 μm and effects of reaction temperature, Ti source purity, and type of alkylamine on size and monodispersity

M. P. Hong, J. Y. Kim, K. Vemula, H. S. Kim and K. B. Yoon, Chem. Commun., 2012, 48, 4250 DOI: 10.1039/C2CC30391D

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Chemical Communications