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Royal Society of Chemistry, RSC Advances, 69(4), p. 36821-36827, 2014

DOI: 10.1039/c4ra04226c

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High surface area TiO2 nanoparticles by a freeze-drying approach for dye-sensitized solar cells

Journal article published in 2014 by K. R. Narendra Pai ORCID, G. S. Anjusree, T. G. Deepak, Devika Subash, Shantikumar V. Nair, A. Sreekumaran Nair
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We outline a simple protocol for fabricating high surface area (similar to 86 m(2) 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 (eta) of similar to 7%.