We outline a simple protocol for fabricating high surface area (∼86 m2 g-1) TiO2 nanoparticles via freeze-drying of a composite of a TiO2 precursor ((Ti(iv) isopropoxide)) and a polymer (polyester) solution. The composite upon freeze-drying results in a porous mass which on subsequent sintering results in degradation of the polymer and formation of TiO2 nanoparticles. The TiO2 particles when employed as a photoanode of dye-sensitized solar cells show an efficiency (η) of ∼7%. © the Partner Organisations 2014.
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K. R. N. Pai, Anjusree, G. S., Deepak, T. G., Subash, D., Nair, S. V., and Nair, A. S., “High surface area TiO2 nanoparticles by a freeze-drying approach for dye-sensitized solar cells”, RSC Advances, vol. 4, pp. 36821-36827, 2014.