Synthesis of nanosized TiO2 powder by Sol-Gel method in acidic conditions
محورهای موضوعی : Journal of the Iranian Chemical Research
Parvain Gharbani
1
(Department of Chemistry, Islamic Azad University, Ahar Branch, Ahar, Iran)
Ali Mehrizad,
2
(Department of Chemistry, Islamic Azad University, Ahar Branch, Ahar, Iran)
Samad Motameni Tabatabii
3
(Department of Chemistry, Islamic Azad University, Ahar Branch, Ahar, Iran)
کلید واژه: Titania, sol-gel, Rutile, Anatase, X-ray diffraction (XRD),
چکیده مقاله :
The preparation of nano-sized TiO2 by titanium tetraisopropoxide (Ti(OiPr)4) via sol-gelmethod using acid as a catalyst is investigated and the optimized conditions concerning theproportional amount of acid, water, alcohol is established by XRD and SEM. The effect ofcalcination temperature on phase transformation of TiO2 (rutile, anatase and brookite) wasdetermined by XRD. The smallest grain size of TiO2 powder we have obtained is 25 nm foranatase at 400 ºC by controlling the acidity and the mole ratio of starting materials.
[1] S.J. Moon, w.w. So, S.B. Park, K.J. Kim, C.H. Shin, J. Mat. Sci. 36 (2001) 4299.
[2] M. Lal, V. Chhabra, P. Ayyub, A. Maitra , J. Mater. Res. 13 (1988) 1249.
[3] U. Selvaraj, A.V. Prasadrao, S. Komerneni, R. Roy, J. Am. Ceram. Soc. 75 (1992) 1167.
[4] R.R. Bacsa, M. Grätzel, J. Am. Ceram. Soc. 79 (1996) 2185.
[5] T.R.N. Kutty, R. Vivekanandan, P. Murugaraj, Mater. Chem. Phys. 19 (1988) 533.
[6] B. Li, X. Wang, M. Yan, L. Li, Mater. Chem. Phys. 78 (2002) 184.
[7] M.J. Hague, D.C. Mayo, J. Am. Ceram. Soc. 77 (1994) 1957.
[8] J. Kim, K. Chan Song, S.E. Pratsinis, J. Nanoparticle Res. 2 (2000) 419.
[9] S. Yamabi, H. Imai, Chem. Mater. 14 (2002) 609.
[10] B.M. Morales, O. Novaro, J. Mater. Res. 10 (1995) 278.
[11] B.D. Cullity, Elements of X-Ray Diffraction, Adison-Wesley, 1978.
