A Photocatalytic Degradation of Phenol Over TiO2 Prepared by Sol-Gel Method

Seong-Soo Hong; Chang-Sik Ju; Chang-Gyu Lim; Byung-Hyun Ahn; Kwon-Taek Lim; Gun-Dae Lee

Journal of Industrial and Engineering Chemistry, Vol.7, No.2, 99-104, March, 2001

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A Photocatalytic Degradation of Phenol Over TiO2 Prepared by Sol-Gel Method

Seong-Soo Hong^†, Chang-Sik Ju , Chang-Gyu Lim, Byung-Hyun Ahn¹, Kwon-Taek Lim², and Gun-Dae Lee

Division of Chemical Engineering, Pukyong National University, Pusan 608-793, Korea
¹Material Science and Engineerings, Pukyong National University, Pusan 608-793, Korea
²Image and Information Engineering, Pukyong National University, Pusan 608-793, Korea

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Photocatalytic degradation of phenol has been carried out over various titanium dioxides. Titanium dioxides were prepared by sol-gel method from titanium iso-propoxide at different R ratio (H2O/titanium isopropoxide) and calcination temperature. All titanium dioxides were characterized by XRD, BET surface area analyzer and UV-DRS. The effect of reaction conditions, such as initial concentration of reactants, reaction temperature and concentration of oxidants on the photocatalytic activity has been studied. Titanium dioxides prepared by sol-gel method show higher activity than commercial TiO2 catalysts on the photocatalytic degradation of phenol. The crystallization of titanium dioxide increases as increasing calcination temperature and rutile-type structure appears when it is calcined at 600 ℃. Titanium dioxide prepared at R ratio=75 and calcined at 400 ℃ shows the highest activity on the photocatalytic degradation of phenol. The photocatalytic degradation of phenol shows pseudo-first order reaction and the degradation rate increases with decreasing initial phenol concentration.

Keywords:Photocatlytic Degradation of Phenol;TiO2;Sol-Gel Method

[References]

Mattews RW, J. Catal., 113, 549 (1988)
Chungm HH, Rho JS, J. Ind. Eng. Chem., 5(4), 261 (1999)
Mills A, Davies RH, Worsley D, Environ. Sci. Technol., 27, 417 (1993)
Mattews RW, Water Res., 20, 569 (1986)
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Fujishima A, Hashimoto K, Watanabe T, "TiO2 Photocatalysis", 124, BKC Inc., Tokyo (1999)
Jung KY, Park SB, J. Photochem. Photobiol. A-Chem., 127, 117 (1999)
Jung KY, Park SB, Appl. Catal. B: Environ., 25(4), 249 (2000)
Mattews RW, J. Phys. Chem., 91, 3328 (1987)
Augugliaro V, Palmisano L, Schiavello M, Sclafani A, Appl. Catal., 69, 323 (1991)
Anpo M, Shima T, Komada S, Kubokawa T, J. Phys. Chem., 91, 4305 (1987)
Ollis DF, Environ. Sci. Technol., 19, 480 (1985)
Sato S, New. J. Chem., 12, 859 (1988)
Al-Sayyed G, D'Oliverla JC, Pichat P, J. Photochem. Photobiol. A-Chem., 58, 99 (1991)

[Referenced By]

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[1] Mattews RW, J. Catal., 113, 549 (1988)

[2] Chungm HH, Rho JS, J. Ind. Eng. Chem., 5(4), 261 (1999)

[3] Mills A, Davies RH, Worsley D, Environ. Sci. Technol., 27, 417 (1993)

[4] Mattews RW, Water Res., 20, 569 (1986)

[5] Palmisano L, Augugliaro V, Schiavello M, Sclafani A, J. Mol. Catal., 56, 284 (1989)

[6] Sclafani A, Palmisano L, Schiavello M, J. Phys. Chem., 94, 829 (1990)

[7] Ishag MIO, Moseley PGN, Tetrahedron, 33, 3141 (1974)

[8] Ward DA, Ho EI, Ind. Eng. Chem. Res., 34(2), 421 (1995)

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

[10] Jung KY, Park SB, J. Photochem. Photobiol. A-Chem., 127, 117 (1999)

[11] Jung KY, Park SB, Appl. Catal. B: Environ., 25(4), 249 (2000)

[12] Mattews RW, J. Phys. Chem., 91, 3328 (1987)

[13] Augugliaro V, Palmisano L, Schiavello M, Sclafani A, Appl. Catal., 69, 323 (1991)

[14] Anpo M, Shima T, Komada S, Kubokawa T, J. Phys. Chem., 91, 4305 (1987)

[15] Ollis DF, Environ. Sci. Technol., 19, 480 (1985)

[16] Sato S, New. J. Chem., 12, 859 (1988)

[17] Al-Sayyed G, D'Oliverla JC, Pichat P, J. Photochem. Photobiol. A-Chem., 58, 99 (1991)