The Size Effect of TiO₂ Anatase Nanoparticles on Photon Correlation Spectroscopy

Mohammad Saeed Hadavi, Soheil Sharifi, Somaye Jafari

Department of Physics, University of Sistan and Baluchestan, Zahedan, Iran.

DOI: 10.4236/snl.2012.24014                

Abstract

In this work, the anataze phase of TiO₂ nanoparticles was prepared by sol gel method. We changed time and temperature of calcinations to change size and property of nanoparticles. The Transmission Electron Microscopy and Scanning Electron Microscopy were used for characterization of the TiO₂ nanoparticles. The nanoparticle size was increased with time and temperature. We found that the average size of samples was changed from 30 to 46 nm with changing temperature from 450℃ to 650℃ and at fixed temperature (450℃) with changing of calcination times from 1 to 3 hours, the size was changed from 30 to 58 nm. For study the dynamic of nanoparticles, the TiO₂ nanoparticles were added to water with 2.4 weights present of particles to the water. The different size of TiO₂ nanoparticles was studied with photon correlation spectroscopy. The relaxation time was increased with increasing of nanoparticle size and so diffusion coefficient was decreased.

Keywords

TiO₂; Nano-Particle; Light Scattering; Spectroscopy; SEM

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	J. g. Yu. et al., “Fabrication and Characterization of Ag-TiO2 Multiphase Nanocomposite Thin Films with Enhanced Photocatalytic Activity,” Applied Catalysis B: Environmental, Vol. 60, No. 3-4, 2005, pp. 211-221.
[2]	C. He, et al., “Influence of Silver Doping on the Photocatalytic Activity of Titania Films,” Applied Surface Science, Vol. 200, No. 1-4, 2002, pp. 239-247. doi:10.1016/S0169-4332(02)00927-3
[3]	K. Kim, et al., “DRAM Technology Perspective for Gigabit Era,” IEEE Transactions on Electron Devices, Vol. 45, No. 3, 1998, p. 598.
[4]	A. Kumar, “Growth of Aligned Single-Crystalline Rutile TiO2 Nanowires on Arbitrary Substrates and Their Application in Dye-Sensitized Solar Cells,” The Journal of Physical Chemistry C, Vol. 114, No. 17, 2010, pp. 77877792. doi:10.1021/jp100491h
[5]	Z. Li, “Highly Sensitive and Stable Humidity Nanosensors Based on LiCl Doped TiO2 Electrospun Nanofibers,” Journal of the American Chemical Society, Vol. 130, No. 15, 2008, pp. 5036-5037. doi:10.1021/ja800176s
[6]	Y. J. Kim, “Effect of TiO2 Particle Size on the Performance of Viologen-Anchored TiO2 Electrochromic Device,” Journal of Nanoscience and Nanotechnology, Vol. 7, No. 11, 2007, pp. 4106-4110. doi:10.1166/jnn.2007.029
[7]	M. Amirkhani, S. Sharifi and O. Marti “The Effect of Simultaneous Size Reduction and Transient Network Formation on the Dynamics of Microemulsions,” Journal of Physics D: Applied Physics, Vol. 45, No. 6, 2012, Article ID: 365302.
[8]	K. Nikjoo, M. Aliahmad, S. Sharifi and M. Sargazi, “Photon Correlation Spectroscopy and SAXS Study of Cylindrical to Spherical Transition in the AOT Microemulsion by Changing Solvent,” Soft Nanoscience Letters, Vol. 2, No .2, 2012, pp. 17-21. doi:10.4236/snl.2012.22004
[9]	N. Karimi, S. Sharifi and M. Aliahmad “Photon Correlation Spectroscopy and SAXS Study of Mixture of NaCl with AOT Microemulsion at X = 6.7,” Optics and Photonics Journal, Vol. 2, No. 1, 2012, pp. 54-58. doi:10.4236/opj.2012.21008
[10]	S. Sharifi, M. Amirkhani, J. M. Asla, M. R. Mohammadi and O. Marti, “Light Scattering Study of Mixture of Polyethylene Glycol with C12E5 Microemulsion,” Soft Nanoscience Letters, Vol. 2, No. 1, 2012, pp. 76-80.