전기화학적 방법에 의한 TiO 2 피막의 생성기구

오한준; 이종호; 장재명; 지충수; H.J. Oh; J.H. Lee; J.M. Jang; C.S. Chi

Korean Journal of Materials Research, Vol.12, No.6, 482-487, June, 2002

DOI10.3740/MRSK.2002.12.6.482 Export Citation

전기화학적 방법에 의한 TiO 2 피막의 생성기구

Formation Mechanisms of TiO 2 Layer by Electrochemical Method

오한준 ^†, 이종호 ¹, 장재명², 지충수 ²

한서대학교 재료공학과
¹한서대학교 화학과
²국민대학교 신소재공학부

H.J. Oh^†, J.H. Lee¹, J.M. Jang², and C.S. Chi²

Dept of Materials Engineering, Hanseo University, Seosan, 352-820, Korea
¹Dept.of Chemistry, Hanseo University, Seosan, 352-820, Korea
²Dept. of Advanced Materials Engineering, Kookmin University, Seoul, 136-702, Korea

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A TiO 2 film for photocatalyst was prepared by anodic oxidation at 180V in acidic electrolyte and film formation mechanism was studied. The major part of anodic TiO 2 film consisted of anatase type structure and surface morphology exhibited a porous cell structure. The thickness growth rate of the oxide film with anodization time revealed two-stage slope corresponds to the surface morphology between anodic films. The growth of pores on cell structure and the growth rate of film with two-stage slope are related to the constant formation rate of the TiO 2 layer.

Keywords:anodic oxidation;TiO 2;porous cell structure;photocatalyst;anatase

[References]

Matthews R, Water Resour., 25, 169 (1991)
Duran M, Dezotti M, Rodriguez J, J. Photochem. Photobiol. A. Chem., 62, 269 (1991)
Weichgrebe D, Vogelpohl A, Bockelmann D, Bahuemann D, Proc. of the 1st Inter. Conf. on TiO 2 Photocatalytic Purification and Treatment of Water and Air, Elsevier, Amsterdam, p.579 (1993) (1993)
Paz Y, Heller A, J. Mater. Res., 12, 2759 (1997)
Kuraki J, Tada H, Hyomen Gijutsu, 12, 1171 (1999)
Jang JM, Kim SK, Oh HJ, Lee JH, Chi CS, Korean J. Mater. Res., 11(1), 61 (2001)
Dyer CK, Leach JS, J, Electrochem. Soc, 125, 1032 (1978)
McAleer JF, Peter LM, J, Electrochem. Soc., 129, 1252 (1982)
Yahalom J, Zahavi J, Electrochim. Acta, 15, 1429 (1970)
Choy KL, Su B, J. Mater. Sci. Lett., 18(12), 943 (1999)
Tokuyoshi S, JETI, 44, 63 (1996)

[Related Articles]

[1] Matthews R, Water Resour., 25, 169 (1991)

[2] Duran M, Dezotti M, Rodriguez J, J. Photochem. Photobiol. A. Chem., 62, 269 (1991)

[3] Weichgrebe D, Vogelpohl A, Bockelmann D, Bahuemann D, Proc. of the 1st Inter. Conf. on TiO 2 Photocatalytic Purification and Treatment of Water and Air, Elsevier, Amsterdam, p.579 (1993) (1993)

[4] Paz Y, Heller A, J. Mater. Res., 12, 2759 (1997)

[5] Kuraki J, Tada H, Hyomen Gijutsu, 12, 1171 (1999)

[6] Jang JM, Kim SK, Oh HJ, Lee JH, Chi CS, Korean J. Mater. Res., 11(1), 61 (2001)

[7] Dyer CK, Leach JS, J, Electrochem. Soc, 125, 1032 (1978)

[8] McAleer JF, Peter LM, J, Electrochem. Soc., 129, 1252 (1982)

[9] Yahalom J, Zahavi J, Electrochim. Acta, 15, 1429 (1970)

[10] Choy KL, Su B, J. Mater. Sci. Lett., 18(12), 943 (1999)

[11] Tokuyoshi S, JETI, 44, 63 (1996)