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Facile one step synthesis of novel TiO2 nanocoral by sol–gel method using Aloe vera plant extract

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Abstract

Titanium oxide (TiO2) nanoparticles (NPs) were synthesized by sol gel method using Aloe vera plant extract as a biological capping agent and a cauliflower-nanocoral morphology was observed in this technique. The assynthesized TiO2 nanopowder was calcined at a range of temperatures (300–600 °C) for 1 h. The influence of A. vera plant extract on the thermal, structural and morphological properties of TiO2 nanopowder was evaluated. Thermogravimetric analysis/differential thermal analysis was employed to study the thermal properties of the assynthesized TiO2 nanopowder. The crystallinity, phase transformation and the crystallite size of the calcined samples were studied by X-ray diffraction technique. XRD result confirmed the presence of TiO2 with anatase phase. FT Raman spectra showed the Raman active modes pertaining to the TiO2 anatase phase and Raman band shift was also observed with respect to particle size variation. The different functional group vibrations of as dried pure A. vera plant extract were compared with the mixture of TiO2 and A. vera plant extract by FT-IR analysis. The scanning electron microscopy images apparently showed the formation of spherical shaped NPs and also it demonstrated the effect of A. vera plant extract on the reduction of particles size. The surface area of the TiO2 NPs was measured through Brunauer–Emmett–Teller analysis. Transmission electron microscopy images ascertained that the spherical shaped TiO2 NPs were formed with cauliflower-nanocoral morphology decorated with nanopolyps with the size range between 15 and 30 nm.

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Acknowledgments

The work was financially assisted by University Grants Commission through the scheme of UGC Major Research Project [No. F. 40-74/2011 (SR)] and highly acknowledged. Also, the authors thank School of Physics, Alagappa University, Karaikudi for extending XRD facility and DST PURSE funded HRSEM instrumental facility extended by Department of Industrial Chemistry, Alagappa university, Karaikudi and Indian Institute of Technology (IIT Madras—SAIF) Chennai for extending the FT Raman instrument facility.

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Authors and Affiliations

  1. Nanoelectronics Laboratory, Department of Nanoscience and Technology, Alagappa University, Karaikudi, 630 004, Tamil Nadu, India

    K. S. Venkatesh, S. R. Krishnamoorthi, N. S. Palani, V. Thirumal & R. Ilangovan

  2. School of Physics, Madurai Kamaraj University, Madurai, 625 021, Tamil Nadu, India

    Sujin P. Jose

  3. Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei, 106, Taiwan

    Fu-Ming Wang

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  1. K. S. Venkatesh
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  2. S. R. Krishnamoorthi
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  3. N. S. Palani
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  4. V. Thirumal
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  5. Sujin P. Jose
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  6. Fu-Ming Wang
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  7. R. Ilangovan
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Correspondence to R. Ilangovan.

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Venkatesh, K.S., Krishnamoorthi, S.R., Palani, N.S. et al. Facile one step synthesis of novel TiO2 nanocoral by sol–gel method using Aloe vera plant extract. Indian J Phys 89, 445–452 (2015). https://doi.org/10.1007/s12648-014-0601-8

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  • DOI: https://doi.org/10.1007/s12648-014-0601-8

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