Nanostructured titanium dioxide (TiO2) find uses in paints, cosmetics, solar cells and air purification. This work explores the use of microchemical process for continuous synthesis of photoactive TiO2 nanoparticles with precise control on phase structure, particle size and morphology. The synthesis was performed under microwave-irradiation to achieve rapid and selective heating and crystallization of active TiO2 phase. The microwave energy and fluid temperature are key factors for crystallization and growth in the microflow reactor. Besides anatase TiO2, zeolite-doped TiO2 and TiO2 nanorods were prepared by flow synthesis and tested for photocatalytic treatment of diclofenac, an edocrine disrupting compound frequently found in surface water. The results showed that increased adsorption and photocatalytic activity are desired for the complete removal and degradation of the pollutant. This was achieved using large surface area TiO2 prepared by rapid crystallization under direct microwave-irradiation. This photocatalyst surpassed commercial Degussa P25 by at least 5 times better.

Continuous microwave synthesis of nanostructured TiO<sub>2</sub> photocatalysts

243rd National Meeting (2012)

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Continuous microwave synthesis of nanostructured TiO2 photocatalysts

Continuous microwave synthesis of nanostructured TiO₂ photocatalysts