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Synthesis and characterization of photosensitive TiO2 nanorods by controlled precipitation route

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Abstract

Nanocrystalline TiO2 thin films have been successfully synthesized by controlled precipitation route. These films are further annealed at 623 K for 2 h. The change in structural, morphological, optical, and wettability properties are studied by means of X-ray diffraction (XRD), Fourier transform infrared spectrum (FTIR), scanning electron microscopy (SEM), optical absorption, and contact angle measurement. From the XRD pattern it is clear that the as-grown TiO2 films are amorphous in nature which becomes polycrystalline after annealing. The FTIR study reveals the formation of TiO2 compound. Scanning electron micrographs shows that the as-grown TiO2 film consists of agglomerated nanograins well covered to the substrate surface which gets converted into vertical nanorods after annealing. As-deposited and annealed TiO2 films showed hydrophilic behavior as water contact angles were 24° and 32°, respectively. The optical absorption study reveals the small red shift due to annealing and attributed to grain size. The annealed TiO2 film showed conversion efficiency of 0.037% in photoelectrochemical cell with 1 M NaOH electrolyte.

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Acknowledgement

Authors are grateful to the University Grants Commission (UGC), New Delhi for financial support through the scheme no. 36-207/2008 (SR).

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Authors and Affiliations

  1. Department of Physics, Thin Film Physics Laboratory, Shivaji University, Kolhapur, 416004, Maharashtra, India

    D. P. Dubal, D. S. Dhawale, A. M. More & C. D. Lokhande

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  1. D. P. Dubal
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  2. D. S. Dhawale
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  3. A. M. More
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  4. C. D. Lokhande
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Correspondence to D. P. Dubal.

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Dubal, D.P., Dhawale, D.S., More, A.M. et al. Synthesis and characterization of photosensitive TiO2 nanorods by controlled precipitation route. J Mater Sci 46, 2288–2293 (2011). https://doi.org/10.1007/s10853-010-5070-7

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  • DOI: https://doi.org/10.1007/s10853-010-5070-7

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