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

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

Chem Commun (Camb). 2012 May 4;48(35):4250-2. doi: 10.1039/c2cc30391d. Epub 2012 Mar 23.

Authors

Myun Pyo Hong¹, Jang Yong Kim, Koteswararao Vemula, Hyun Sung Kim, Kyung Byung Yoon

Affiliation

¹ Korea Centre for Artificial Photosynthesis, Centre for Microcrystal Assembly, Department of Chemistry, Sogang University, Seoul, Korea.

PMID: 22441100
DOI: 10.1039/c2cc30391d

Abstract

We report a novel method for synthesizing monodisperse mesoporous TiO(2) spheres (sizes = 0.6-3.1 μm) by hydrolysis of titanium isopropoxide (TIP) in a mixture of C(8)-C(16)n-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.