Synthesis of TiO2 Nanoparticles in Reverse Microemulsion and Their Photocatalytic Activity

Man Sig Lee; Gun-Dae Lee; Seong Soo Park; Seong-Soo Hong

Journal of Industrial and Engineering Chemistry, Vol.9, No.1, 89-95, January, 2003

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Synthesis of TiO2 Nanoparticles in Reverse Microemulsion and Their Photocatalytic Activity

Man Sig Lee, Gun-Dae Lee, Seong Soo Park , and Seong-Soo Hong^†

Division of Chemical Engineering, Pukyong National Univeristy, Busan 608-739, Korea

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TiO2 nanoparticles were prepared using hydrolysis of titanium tetraisopropoxide (TTIP) in W/O microemulsions consisting of water, nonionic surfactant, and cyclohexane. The physical properties of nanosized TiO2 have been investigated by TEM, XRD, FT-IR, TGA and DTA. In addition, the photocatalytic degradation of p-nitrophenol has been studied by using batch reactor in the presence of UV light in order to compare the photocatalytic activity of prepared nanosized titania. TiO2 particles calcined at 500 ℃ have a stable anatase phase which has no organic surfactants. Above 300 ℃, the product completely transforms into the anatase phase and the rutile phase begins to appear at 600 ℃. The crystallite size and crystallinity increase with an increase of calcination temperature. The particles are shown to have a spherical shape and have an uniform size distribution. In adition, the size of particles increases with an increase of Wo ratio and a decrease of hydrocarbon chain length. In the photocatalytic degradation of p-nitrophenol, the titania calcined at 500 ℃ shows the highest activity on the photocatalytic degradation of p-nitrophenol and the pure anatase structure.

Keywords:nanosized titania;tween;surfactant;reverse micelle;photocatalytic degradation of p-nitrophenol

[References]

Kamat PV, Chem. Rev., 93, 267 (1993)
Yi KC, Fendler JH, Langmuir, 6, 1519 (1990)
Youn HC, Baral S, Fendler JH, J. Phys. Chem., 92, 6320 (1988)
Fendler JH, Chem. Rev., 87, 877 (1987)
Petit C, Lixon P, Pileni MP, J. Phys. Chem., 94, 1598 (1990)
Leung R, Hou MJ, Shah DO, D.T. Wasan, M.E. Ginn, and D.O. Shah (Eds.), Surfactant Science Series, Vol. 28, Marcel Dekker, New York, p. 315 (1988)
Pillai V, Shah DO, C. Soalns, H. Kunieda (Eds.), Industrial Application of Microemulsion, Marcel Dekker, New York, p. 227 (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, Kim JH, Ahn BH, Lim KT, Lee GD, J. Ind. Eng. Chem., 8(2), 150 (2002)
Herrig H, Hempelmann R, Mater. Lett., 27, 287 (1996)
Lim KT, Hwang HS, Lee Ms, Lee GD, Hong SS, Johnston KP, Chem. Commun., 14, 1528 (2002)
Lee MS, Lee GD, Ju CS, Lim KT, Hong SS, J. Korean Ind. Eng. Chem., 13(3), 216 (2002)
Herrig H, Hempelmann R, Nanostruct. Mater., 9, 241 (1997)
Cullity BD, "Elements of X-Ray Diffraction," 2nd edn., Addison-Wesley, Reading, MA 102 (1978)
Reddy KM, Reddy CVG, Manorama SV, J. Solid State Chem., 158, 180 (2001)
Pecchi G, Reyes P, Sanhueza P, Villasenor J, Chemosphere, 43, 141 (2001)
Moran PD, Bartlett JR, Bowmaker GA, Woolfrey JL, Cooney RP, J. Sol-Gel Sci. Tech., 15, 251 (1999)
Fendler JH, Chem. Rev., 87, 887 (1987)
Turchi CS, Ollis DF, J. Catal., 122, 178 (1990)
Fujishima A, hashimoto K, Watanabe T, "TiO₂ Photocatalysis," p. 124, BKC, Inc., Tokyo (1999)
Lee GD, Jung SK, Jeong YJ, Park JH, Suh CS, Ahn BH, Hong SS, J. Ind. Eng. Chem., 8(1), 22 (2002)

[Referenced By]

[Related Articles]

[1] Kamat PV, Chem. Rev., 93, 267 (1993)

[2] Yi KC, Fendler JH, Langmuir, 6, 1519 (1990)

[3] Youn HC, Baral S, Fendler JH, J. Phys. Chem., 92, 6320 (1988)

[4] Fendler JH, Chem. Rev., 87, 877 (1987)

[5] Petit C, Lixon P, Pileni MP, J. Phys. Chem., 94, 1598 (1990)

[6] Leung R, Hou MJ, Shah DO, D.T. Wasan, M.E. Ginn, and D.O. Shah (Eds.), Surfactant Science Series, Vol. 28, Marcel Dekker, New York, p. 315 (1988)

[7] Pillai V, Shah DO, C. Soalns, H. Kunieda (Eds.), Industrial Application of Microemulsion, Marcel Dekker, New York, p. 227 (1997)

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

[9] Hong SS, Lee MS, Kim JH, Ahn BH, Lim KT, Lee GD, J. Ind. Eng. Chem., 8(2), 150 (2002)

[10] Herrig H, Hempelmann R, Mater. Lett., 27, 287 (1996)

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

[12] Lee MS, Lee GD, Ju CS, Lim KT, Hong SS, J. Korean Ind. Eng. Chem., 13(3), 216 (2002)

[13] Herrig H, Hempelmann R, Nanostruct. Mater., 9, 241 (1997)

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

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

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

[17] Moran PD, Bartlett JR, Bowmaker GA, Woolfrey JL, Cooney RP, J. Sol-Gel Sci. Tech., 15, 251 (1999)

[18] Fendler JH, Chem. Rev., 87, 887 (1987)

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

[20] Fujishima A, hashimoto K, Watanabe T, "TiO₂ Photocatalysis," p. 124, BKC, Inc., Tokyo (1999)

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