Effects of Interface Hydrophilicity and Metallic Compounds on Water-Splitting Efficiency in Bipolar Membranes

Moon-Sung Kang; Akihiko Tanioka; Seung-Hyeon Moon

Korean Journal of Chemical Engineering, Vol.19, No.1, 99-106, January, 2002

DOI10.1007/BF02706881 Export Citation

Effects of Interface Hydrophilicity and Metallic Compounds on Water-Splitting Efficiency in Bipolar Membranes

Moon-Sung Kang, Akihiko Tanioka¹, and Seung-Hyeon Moon^†

Department of Environmental Science and Engineering, Kwangju Institute of Science and Technology, 1 Oryong-dong, Puk-gu, Gwangju 500-712, Korea
¹Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama,Meguro-ku, Tokyo 152, Japan

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Bipolar membranes (BPMs) were prepared by using commercial ion exchange membranes and hydrophilic polymer as a binder to investigate the effects of the interface hydrophilicity on water-splitting capacity. In this study, polyHEMA/MPD cross-linked with TMC was used as a binding material to enhance the BPM interface hydrophilicity. The enhanced hydrophilicity of the BPM interface accelerated the water-splitting reaction because the hydrophilic polymer layer increases the water activity by attracting water from the ion exchange layers to the space charge region. In addition, a mechanism of the metal catalytic reaction was proposed. Metal species were immobilized in the BPM in a hydroxide form and possibly react with water molecules and the quaternary ammonium groups reversibly. It was also observed that metal species immobilized in the membrane improved the water-splitting efficiency by increment of the membrane wetness and enhancement of the membrane conductivity, with an apparent optimum metal concentration for the water-splitting reaction.

Keywords:Bipolar Membrane;Hydrophilicity;PolyHEMA/MPD;Immobilization of Metallic Compound;Metal Catalytic Reaction

[References]

Bauer B, Gerner FJ, Strathmann H, Desalination, 68, 279 (1988)
Cherif AT, Molenat J, Elmidaoui A, J. Appl. Electrochem., 27(9), 1069 (1997)
Chiao YC, Chlanda FP, Mani KN, J. Membr. Sci., 61, 239 (1991)
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Graillon S, Persin F, Pourcelly G, Gavach C, Desalination, 107(2), 159 (1996)
Hanada P, U.S. Patent, 5,221,455 (1993)
Li JL, Wang YZ, Yang CY, Long GD, Shen H, J. Membr. Sci., 147(2), 247 (1998)
Kim HS, Han JW, Chun KY, Shul YG, Joe YI, Korean J. Chem. Eng., 12(4), 405 (1995)
Kim YH, Moon SH, J. Chem. Technol. Biotechnol., 176, 1 (2001)
Lee EG, Moon SH, Chang YK, Yoo IK, Chang HN, J. Membr. Sci., 145(1), 53 (1998)
Lee JK, Song IK, Lee WY, Korean J. Chem. Eng., 12(3), 384 (1995)
Liu KJ, Chlanda FP, Nagasubramanian K, J. Membr. Sci., 3, 57 (1978)
Liu KJ, Nagasubramanian K, Chlanda FP, J. Membr. Sci., 3, 71 (1978)
Mafe S, Manzanares JA, Phys. Rev., A, 42, 6245 (1990)
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Pineri M, Jesior JC, Coey JMD, J. Membr. Sci., 24, 325 (1985)
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Zabolotskii VI, Ganych VV, Sheldeshov NV, Sov. Electrochem., 27, 1098 (1991)

[Referenced By]

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[1] Bauer B, Gerner FJ, Strathmann H, Desalination, 68, 279 (1988)

[2] Cherif AT, Molenat J, Elmidaoui A, J. Appl. Electrochem., 27(9), 1069 (1997)

[3] Chiao YC, Chlanda FP, Mani KN, J. Membr. Sci., 61, 239 (1991)

[4] Choi JS, Song IK, Lee WY, Korean J. Chem. Eng., 17(3), 280 (2000)

[5] Graillon S, Persin F, Pourcelly G, Gavach C, Desalination, 107(2), 159 (1996)

[6] Hanada P, U.S. Patent, 5,221,455 (1993)

[7] Li JL, Wang YZ, Yang CY, Long GD, Shen H, J. Membr. Sci., 147(2), 247 (1998)

[8] Kim HS, Han JW, Chun KY, Shul YG, Joe YI, Korean J. Chem. Eng., 12(4), 405 (1995)

[9] Kim YH, Moon SH, J. Chem. Technol. Biotechnol., 176, 1 (2001)

[10] Lee EG, Moon SH, Chang YK, Yoo IK, Chang HN, J. Membr. Sci., 145(1), 53 (1998)

[11] Lee JK, Song IK, Lee WY, Korean J. Chem. Eng., 12(3), 384 (1995)

[12] Liu KJ, Chlanda FP, Nagasubramanian K, J. Membr. Sci., 3, 57 (1978)

[13] Liu KJ, Nagasubramanian K, Chlanda FP, J. Membr. Sci., 3, 71 (1978)

[14] Mafe S, Manzanares JA, Phys. Rev., A, 42, 6245 (1990)

[15] Mani KN, Chlanda FP, Byszewski CH, Desalination, 68, 149 (1988)

[16] Nagasubramanian K, Chlanda FP, Liu KJ, J. Membr. Sci., 2, 109 (1977)

[17] Onsager L, J. Chem. Phys., 2, 599 (1934)

[18] Pineri M, Jesior JC, Coey JMD, J. Membr. Sci., 24, 325 (1985)

[19] Pomogailo AD, "Polymeric Immobilized Metal Complex Catalysts," Moscow: Nauka (1988)

[20] Ramirez P, Aguilella VM, Manzanares JA, Mafe S, J. Membr. Sci., 73, 191 (1992)

[21] Salamone JC, "Polymeric Materials Encyclopedia," CRC Press (1996)

[22] Sata T, Chem. Mater., 3, 838 (1994)

[23] Shimizu K, Tanioka A, Polymer, 38(21), 5441 (1997)

[24] Simons R, Electrochim. Acta, 31, 1175 (1986)

[25] Simons R, J. Membr. Sci., 78, 13 (1993)

[26] Simons R, Electrochim. Acta, 30, 275 (1985)

[27] Strathmann H, Krol JJ, Rapp HJ, Eigenberger G, J. Membr. Sci., 125(1), 123 (1997)

[28] Strathmann H, Rapp HJ, Bauer B, Bell CM, Chemtech, 17 (1993)

[29] Strathmann H, Rapp HJ, Bauer B, Bell CM, Desalination, 90, 303 (1993)

[30] Tanioka A, Shimizu K, Miyasaka K, Zimmer HJ, Minoura N, Polymer, 37(10), 1883 (1996)

[31] The Membrane Society of Korea, "Membrane Separation," Freedom Academy, Korea (1996)

[32] Tokuyama Co. Ltd., Bulletin-NEOSEPTA Ion Exchange Membrane (1993)

[33] Zabolotskii VI, Ganych VV, Sheldeshov NV, Sov. Electrochem., 27, 1098 (1991)