GROWTH MECHANISM OF MONODISPERSED TiO2 FINE PARTICLES BY THE HYDROLYSIS OF Ti(OC2H5)4

Kim HT; Park H; Bae SY; Yoo KO

Korean Journal of Chemical Engineering, Vol.12, No.5, 516-522, November, 1995

GROWTH MECHANISM OF MONODISPERSED TiO₂ FINE PARTICLES BY THE HYDROLYSIS OF Ti(OC₂H₅)₄

In order to investigate the growth mechanism of TiO₂, the monodispersed TiO₂ fine particles were prepared by hydrolysis of Ti(OC₂H₅)₄ using the seed preparation method. Although it was impossible to grow TiO₂ particles to more than 1 ㎛ with conventional liquid phase reaction method, we obtained monodispersed TiO₂ fine particles of up to 2.5㎛. Nielsen’s chronomal analysis and Overbeek’s theory were applied to clarify the particle growth mechanism. The particle growth mechanism was found out as a first-order polynuclear layer growth mechanism and the growth rate constant, k_p was about 6.45X10^-6cm/s.

Keywords:Growth Mechanism;Monodispersed Fine Particles;Nielsen's Chronomal Analysis

[References]

Bailey JK, Mecartney ML, Colloids Surf., 63, 151 (1992)
Barringer EA, Bowen HK, J. Am. Ceram. Soc., 65(12), C199 (1982)
Barringer EA, Jubb N, Fegley B, Pober RL, Bowen HK, "Ultrastructure Processingof Advanced Ceramics," Wiley, New York (1984)
Barringer EA, Bowen HK, Langmuir, 1, 414 (1985)
Bogush GH, Zukoski CF, "Ultrastructure Processing of Advanced Ceramics," Wiley, New York, 477 (1988)
Brinker C, Scherer J, George W, "Sol-Gel Science," Academic Press, San Diego (1990)
Byers CH, Harris MT, "Ultrastructure Processing of Advanced Ceramics," Wiley, New York, 843 (1988)
Duonghong D, Borgarello E, Gratzel M, J. Am. Chem. Soc., 103, 4685 (1981)
Edelson LH, Glaeser AM, J. Am. Ceram. Soc., 71(4), 225 (1988)
Edelson LH, Glaeser AM, J. Am. Ceram. Soc., 71(4), C198 (1988)
Harris MT, Byers CH, J. Non-Cryst. Solids, 103, 49 (1988)
Hench LL, West JK, Chem. Rev., 90, 33 (1990)
Jean JH, Ring TA, Proc. Br. Ceram. Soc., 38, 11 (1984)
Jean JH, Ring TA, Am. Ceram. Soc. Bull., 65(12), 1574 (1986)
Lamer VK, Dinegar RH, J. Am. Chem. Soc., 72(11), 4847 (1950)
Matijevic E, Budmik M, Meites L, J. Colloid Interface Sci., 61(2), 302 (1977)
Messing GL, Minehan WT, J. Ceram. Soc. Jpn., 99(10), 1036 (1991)
Mohanty R, Bhandarkar S, Estrin J, AIChE J., 36(10), 1536 (1990)
Moller HJ, Welsch G, J. Am. Ceram. Soc., 68(6), 320 (1985)
Nakanishi K, Takamiya Y, J. Ceram. Soc. Jpn., 96(7), 719 (1988)
Ogihara T, Mizutani N, Kato M, J. Am. Ceram. Soc., 72(3), 421 (1989)
Okamura H, Barringer EA, Bowen HK, J. Am. Ceram. Soc., 69(2), C22 (1986)
Overbeek JG, J. Colloid Interface Sci., 58(2), 408 (1977)
Overbeek JG, Adv. Colloid Interface Sci., 15, 251 (1982)
Ragai J, Lotfi W, Colloids Surf., 61, 97 (1991)
Sacks MD, Tseng T, J. Am. Ceram. Soc., 67(8), 526 (1984)
Yan MF, Mater. Sci. Eng., 48, 53 (1981)
Yonemoto T, Takagi S, Doi T, Uchida F, Tadaki T, J. Chem. Eng. Jpn., 18(6), 887 (1992)

[1] Bailey JK, Mecartney ML, Colloids Surf., 63, 151 (1992)

[2] Barringer EA, Bowen HK, J. Am. Ceram. Soc., 65(12), C199 (1982)

[3] Barringer EA, Jubb N, Fegley B, Pober RL, Bowen HK, "Ultrastructure Processingof Advanced Ceramics," Wiley, New York (1984)

[4] Barringer EA, Bowen HK, Langmuir, 1, 414 (1985)

[5] Bogush GH, Zukoski CF, "Ultrastructure Processing of Advanced Ceramics," Wiley, New York, 477 (1988)

[6] Brinker C, Scherer J, George W, "Sol-Gel Science," Academic Press, San Diego (1990)

[7] Byers CH, Harris MT, "Ultrastructure Processing of Advanced Ceramics," Wiley, New York, 843 (1988)

[8] Duonghong D, Borgarello E, Gratzel M, J. Am. Chem. Soc., 103, 4685 (1981)

[9] Edelson LH, Glaeser AM, J. Am. Ceram. Soc., 71(4), 225 (1988)

[10] Edelson LH, Glaeser AM, J. Am. Ceram. Soc., 71(4), C198 (1988)

[11] Harris MT, Byers CH, J. Non-Cryst. Solids, 103, 49 (1988)

[12] Hench LL, West JK, Chem. Rev., 90, 33 (1990)

[13] Jean JH, Ring TA, Proc. Br. Ceram. Soc., 38, 11 (1984)

[14] Jean JH, Ring TA, Am. Ceram. Soc. Bull., 65(12), 1574 (1986)

[15] Lamer VK, Dinegar RH, J. Am. Chem. Soc., 72(11), 4847 (1950)

[16] Matijevic E, Budmik M, Meites L, J. Colloid Interface Sci., 61(2), 302 (1977)

[17] Messing GL, Minehan WT, J. Ceram. Soc. Jpn., 99(10), 1036 (1991)

[18] Mohanty R, Bhandarkar S, Estrin J, AIChE J., 36(10), 1536 (1990)

[19] Moller HJ, Welsch G, J. Am. Ceram. Soc., 68(6), 320 (1985)

[20] Nakanishi K, Takamiya Y, J. Ceram. Soc. Jpn., 96(7), 719 (1988)

[21] Ogihara T, Mizutani N, Kato M, J. Am. Ceram. Soc., 72(3), 421 (1989)

[22] Okamura H, Barringer EA, Bowen HK, J. Am. Ceram. Soc., 69(2), C22 (1986)

[23] Overbeek JG, J. Colloid Interface Sci., 58(2), 408 (1977)

[24] Overbeek JG, Adv. Colloid Interface Sci., 15, 251 (1982)

[25] Ragai J, Lotfi W, Colloids Surf., 61, 97 (1991)

[26] Sacks MD, Tseng T, J. Am. Ceram. Soc., 67(8), 526 (1984)

[27] Yan MF, Mater. Sci. Eng., 48, 53 (1981)

[28] Yonemoto T, Takagi S, Doi T, Uchida F, Tadaki T, J. Chem. Eng. Jpn., 18(6), 887 (1992)