Abstract
Mesoporous TiO2 microspheres are successfully synthesized via a simple wet chemical method using a mixture of ethanol, titanium isopropoxide and 2-chloroaniline. The structural, optical, vibrational and morphological properties of the TiO2 microspheres are characterized. Dominant anatase phase formation is observed in the structural analysis. A significant shift is observed for the band gap energy of the synthesized products with respect to that of bulk TiO2 because of the quantum confinement effect. The synthesis parameters are investigated in detail by a series of control experiments. Well defined mesoporous TiO2 microsphere morphology is acquired by microscopy techniques. It is found that the 2-chloroaniline influences the formation and optical properties of mesoporous TiO2 microspheres.
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