Hydrothermal Synthesis of Titanium Dioxide Using Acidic Peptizing Agents and Their Photocatalytic Activity

Jun Ho Kim; Byung Ho Noh; Gun-Dae Lee; Seong-Soo Hong

Korean Journal of Chemical Engineering, Vol.22, No.3, 370-374, May, 2005

DOI10.1007/BF02719413 Export Citation

Hydrothermal Synthesis of Titanium Dioxide Using Acidic Peptizing Agents and Their Photocatalytic Activity

Jun Ho Kim, Byung Ho Noh, Gun-Dae Lee, and Seong-Soo Hong^†

Division of Applied Chemical Engineering, Pukyong National University, 100 Yongdang-dong, Nam-ku, Busan 608-739, Korea

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We have prepared TiO2 nanoparticles by the hydrolysis of titanium tetraisopropoxide (TTIP) using HNO3 as a peptizing agent in the hydrothermal method. The physical properties of nanosized TiO2 have been investigated by TEM, XRD and FT-IR. The photocatalytic degradation of orange II has been studied by using a batch reactor in the presence of UV light. When the molar ratio of HNO3/TTIP was 1.0, the rutile phase appeared on the titania and the photocatalytic activity decreased with an increase of HNO3 concentration. The crystallite size of the anatase phase increased from 6.6 to 24.2 nm as the calcination temperature increased from 300 ℃ to 600 ℃. The highest activity on the photocatalytic decomposition of orange II was obtained with titania particles dried at 105 ℃ without a calcination and the photocatalytic activity decreased with increasing the calcination temperature. In addition, the titania particles prepared at 180 ℃ showed the highest activity on the photocatalytic decomposition of orange II.

Keywords:Nanosized Titania;Hydrothermal Method;Peptizing Agent;HNO3;Photocatalytic Degradation of Orange II

[References]

Chai YS, Lee JC, Kim BW, Korean J. Chem. Eng., 17(6), 633 (2000)
Cullity BD, Elements of X-Ray Diffraction, 2nd edn., Addision-Wesley, Reading, MA, 102 (1978)
Fujishima A, Hashimoto K, Watanabe T, "TiO2 Photocatalysis", 124, Inc, Tokyo, 124 (1999)
Gopal M, Chan WJ, Dejonghe LC, J. Mater. Sci., 32(22), 6001 (1997)
Hong SS, Ju CS, Lim CG, Ahn BH, Lim KT, Lee GD, J. Ind. Eng. Chem., 7(2), 99 (2001)
Hong SS, Lee MS, Lee GD, React. Kinet. Catal. Lett., 80, 145 (2003)
Lee GD, Jung SK, Jeong YJ, Park JH, Suh CS, Ahn BH, Hong SS, J. Ind. Eng. Chem., 8(1), 22 (2002)
Lim KT, Hwang HS, Lee MS, Lee GD, Hong SS, Johnston KP, Chem. Commun., 14, 1528 (2002)
Mu Y, Yu HQ, Zheng JC, Zhang SJ, J. Photochem. Photobiol. A-Chem., 163, 311 (2004)
Nam WS, Han GY, Korean J. Chem. Eng., 20(1), 180 (2003)
Pecchi G, Reyes P, Sanhueza P, Villasenor J, Chemosphere, 43, 141 (2001)
Reddy KM, Reddy CVG, Manorama SV, J. Solid State Chem., 158, 180 (2001)
Ryu YB, Lee MS, Park SS, Lee GD, Hong SS, React. Kinet. Catal. Lett., in press.
Turchi CS, Ollis DF, J. Catal., 122, 178 (1990)
Wang C, Ying JY, Chem. Mater., 11, 3113 (1999)
Wold A, Chem. Mater., 5, 280 (1993)
Yang J, Mei S, Ferreira JMF, Mater. Sci. Eng. C-Biomimetic Supramol. Syst., 15, 183 (2001)

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[1] Chai YS, Lee JC, Kim BW, Korean J. Chem. Eng., 17(6), 633 (2000)

[2] Cullity BD, Elements of X-Ray Diffraction, 2nd edn., Addision-Wesley, Reading, MA, 102 (1978)

[3] Fujishima A, Hashimoto K, Watanabe T, "TiO2 Photocatalysis", 124, Inc, Tokyo, 124 (1999)

[4] Gopal M, Chan WJ, Dejonghe LC, J. Mater. Sci., 32(22), 6001 (1997)

[5] Hong SS, Ju CS, Lim CG, Ahn BH, Lim KT, Lee GD, J. Ind. Eng. Chem., 7(2), 99 (2001)

[6] Hong SS, Lee MS, Lee GD, React. Kinet. Catal. Lett., 80, 145 (2003)

[7] Lee GD, Jung SK, Jeong YJ, Park JH, Suh CS, Ahn BH, Hong SS, J. Ind. Eng. Chem., 8(1), 22 (2002)

[8] Lim KT, Hwang HS, Lee MS, Lee GD, Hong SS, Johnston KP, Chem. Commun., 14, 1528 (2002)

[9] Mu Y, Yu HQ, Zheng JC, Zhang SJ, J. Photochem. Photobiol. A-Chem., 163, 311 (2004)

[10] Nam WS, Han GY, Korean J. Chem. Eng., 20(1), 180 (2003)

[11] Pecchi G, Reyes P, Sanhueza P, Villasenor J, Chemosphere, 43, 141 (2001)

[12] Reddy KM, Reddy CVG, Manorama SV, J. Solid State Chem., 158, 180 (2001)

[13] Ryu YB, Lee MS, Park SS, Lee GD, Hong SS, React. Kinet. Catal. Lett., in press.

[14] Turchi CS, Ollis DF, J. Catal., 122, 178 (1990)

[15] Wang C, Ying JY, Chem. Mater., 11, 3113 (1999)

[16] Wold A, Chem. Mater., 5, 280 (1993)

[17] Yang J, Mei S, Ferreira JMF, Mater. Sci. Eng. C-Biomimetic Supramol. Syst., 15, 183 (2001)