Comparison of Acidic and Polymeric Agents in Synthesis of TiO₂ Nanoparticles via a Modified Sol-Gel Method

Masoud Karimipour

Department of Physics, Vali-E-Asr University of Rafsanjan, Rafsanjan, Iran.

DOI: 10.4236/wjnse.2013.33012                

Abstract

TiO₂ nano particles were synthesized in Rutile and Anatase phases by sol-gel method using two kind of complex agents, acidic (Citric Acid) and organic complex agent (acetyl acetone) at 400°C, 500°C, 650°C sintering temperatures. The structural analysis by XRD diffraction confirmed phase formation of titanium oxide. Particles sizes were determined by using Scherrer formula. TEM was employed to confirm nano particles formation. The size of nano particles as well as Phase formation can be controlled by the type of complex agent and sintering temperature. Acetyl Acetone causes a more crystalline structure and more uniformity of size distribution in 400°C sintering temperatures. Moreover, it results in obtaining single phase TiO₂ nanoparticles at 400°C and 650°C sintering temperature. On the other hand, at high sintering temperature, the particles obtained from polymeric agent tend to agglomerate larger in size than the acidic product.

Keywords

Sol-Gel Method; Photo Catalyst; Rutile; Anatase; Complex Agent

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	K. Mori, KONA, “Photo-Functionalized Materials Using Nanoparticles: Photocatalysis,” KONA, Vol. 3, No. 23, 2005.
[2]	D. M. Blake, P. C. Maness, Z. Huang, E. J. Wolfrum and J. Huang, “Application of the Chemistry of Titanium Oxide to Disinfection and the Killing of Cancer Cells,” Separation and Purification Methods, Vol. 28, 1999, pp. 1-50.
[3]	M. O. Abou-Helal and W. T. Seeber, “Preparation of TiO2 Thin Films by Spray Pyrolysis to Be Used as a Photo-Catalyst,” Applied Surface Science, Vol. 195, No. 1-4, 2002, pp. 53-62. doi:10.1016/S0169-4332(02)00533-0
[4]	A. Zaleska “Doped-TiO2: A Review,” Recent Patents on Engineering, Vol. 2, No. 3, 2008, pp. 157-164. doi:10.2174/187221208786306289
[5]	Y. L. Jeyachandran, S. K. Narayandass, D. Mangalaraj, C. Y. Bao and P. J. Martin, “The Effect of Surface Composition of Titanium Films on Bacterial Adhesion,” Biomedical Materials, Vol. 1, No. 1, 2006. doi:10.1088/1748-6041/1/1/L01
[6]	H. Irie, Y. Watanabe and K. J. Hashimoto, “Nitrogen-Concentration Dependence on Photocatalytic Activity of TiO2-xNx Powders,” The Journal of Physical Chemistry B, Vol. 107, No. 23, 2003, pp. 5483-5486. doi:10.1021/jp030133h
[7]	M. Okuya, K. Nakade, D. Osa, T. Nakano, G. R. A. Kumara and Sh. Kaneko, “Fabrication of Dye-Sensitized Solar Cells by Spray Pyrolysis Deposition (SPD) Technique,” Journal of Photochemistry and Photobiology A: Chemistry, Vol. 164, No. 1-3, 2004, pp. 167-172.
[8]	P. Cameron and L. Peter, “Compact TiO2 Blocking Layers in Dye Sensitized Nanocrystalline Solar Cells,” The Journal of Physical Chemistry B, Vol. 104, No. 5, 2000, pp. 949-958. doi:10.1021/jp993220b
[9]	A. Heft, T. To. lke, A. Pfuch and C. Erbe, “Photocatalytically Active Thin Films on Float Glass with Enhanced Hydrophilicity and Transmission for Photovoltaic Applications,” Solar Energy Materials & Solar Cells, Vol. 90, No. 17, 2006, pp. 2846-2854. doi:10.1016/j.solmat.2006.04.008
[10]	W. Chen, X. D. Sun and D. Weng, “Morphology Control of Titanium Oxides by Tetramethylammonium Cations in Hydrothermal Conditions,” Materials Letters, Vol. 60, No. 29-30, 2006, pp. 3477-3480. doi:10.1016/j.matlet.2006.03.035
[11]	Ch. Wang and J. Y. Ying, “Sol-Gel Synthesis and Hydrothermal Processing of Anatase and Rutile Titania Nano Crystals,” Chemistry of Materials, Vol. 11, No. 11, 1999, pp. 3113-3120.
[12]	Z. Tang, J. Zhang, Zh. Cheng and Zh. Zhang, “Synthesis of Nanosized Rutile TiO2 Powder at Low Temperature,” Materials Chemistry and Physics, Vol. 77, No. 2, 2002, pp. 314-317. doi:10.1016/S0254-0584(02)00003-2
[13]	X. B. Chen and S. S. Mao, “Titanium Dioxide Nanomaterials: Synthesis,Properties, Modifications, and Applications,” Chemistry of Materials, Vol. 107, No. 7, 2007, pp. 2891-2959. doi:10.1021/cr0500535
[14]	M. Kakihana, “Invited Review ‘Sol-Gel’ Preparation of High Temperature Superconducting Oxides,” Journal of Sol-Gel Science and Technology, Vol. 6, No. 1, 1996, pp. 7-55. doi:10.1007/BF00402588
[15]	M. P. Pechini, “Method of Preparing Lead and Alkaline Earth Titanates and Niobates and Coating Method Using the Same to Form a Capacitor,” US Patent No3330697, 1967.
[16]	J. Tauc, “Optical Properties of Solids,” Academic, New York, 1966.