Photocatalytic Oxidation of Ethanol During Hydrogen Generation from Water-Ethanol Mixture over Gadolinium-Doped Titania

• Autorzy: Zalas M. , Gierczyk B. , Łaniecki M.
• Języki publikacji: EN

Abstrakty

EN

Photocatalytic hydrogen generation from wa ter in the presence of ethanol as a sacrificial reagent was studied over gadolinium doped TiO2 photocatalyst. Photocatalytic path ways of ethanol oxidation were studied with liquid 1H NMR spectroscopy. The 1H NMR results were compared with amounts of evolved hydrogen and carbon dioxide. Acetal dehyde, acetic acid, glycolic acid and glyoxylic acid were found as major intermediates of this process, whereas carbon dioxide evolution was the last step during ethanol photooxidation process. The mechanism of ethanol photooxidation has been proposed.

Słowa kluczowe

EN

hydrogen; ethanol photooxidation; water photodecomposition; Gd-doped titania; photocatalysis

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2008
• Tom: Vol. 82, nr 9
• Strony: 1767--1777
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Zalas M.

autor

Gierczyk B.

autor

Łaniecki M.

• Faculty of Chemistry, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland phone: [phone],

Bibliografia

• 1. Fujishima A. and Honda K., Nature, 37, 238 (1972).
• 2. Kreutler B. and Bard A.J., J. Am. Che. Soc., 100, 2239 (1978).
• 3. Bard A.J., J. Photochem., 10, 59 (1979).
• 4. Nada A.A., Barakat M.H., Hamed H.A., Mohamed N.R. and Veziroglu T.N., Int. J. Hydr. En., 30, 687 (2005).
• 5. Li Y., Lu G. and Li S., Appl. Catal. A: General, 214, 179 (2001).
• 6. Li Y., Lu G. and Li S., Chemosphere, 52, 843 (2003).
• 7. Momirlan M.,  Surcel I. and Veziroglu T.N., Proceed. Int. Hydr. En. Congress and Exhibition IHEC 2005, Istambuł, Turkey 13-15 July 2005.
• 8. a. Kawai T. and Sakata T., Chem. Commun., 694 (1980); b. Kawai T. and Sakata T., Chem. Len., 81 (1981); c. Sakata T. and Kawai T., Chem. Phys. Lett., 80,341 (1981); d. Sakata T. and Kawai T., Chem. Phys. Lett., 88, 50(1982).
• 9. a. Zou Z. and Arakawa H., J. Photochem. Photobiol. A: Chem., 158,145 (2003); b. Zou Z., Ye J., Abe R. and Arakawa H., Catal. Lett., 68, 235 (2000).
• 10. Chen J., Ollis D.F., Rulkens W.H. and Bruning H., Wat. Res.t 33, 1173 (1999).
• 11. Müller B.R., Majoni S., Meissner D. and Memming R., J. Photochem. Photobiol. A: Chem., 151, 253 (2002).
• 12. Coronado J.M., Kataoka S., Tejedor-Tejedor I. and Andersen MA.,  J. Catal., 219, 219 (2003)
• 13. Idriss H. and Seebauer E.G., Langmuir, 14, 6146 (1998).
• 14. a. Pilkenton S. and Raftery D., Solid State Nucl. Magn. Reson., 24,236 (2003); b. Klosek S. and Rafteiy I J. Phys. Chem. B, 105, 2815 (2001); c. Hwang S. and Raftery D., Catal. Today, 49, 353 (1999);d. Pilkenton S., Xu W. and Raftery D., Anal.Sci., 17,125 (2001); e. Pilkenton S., Hwang S. and Raftery I J. Phys. Chem. B, 103, 11152 (1999) .
• 15. Łaniecki M., Proceed. 31st Int. Conf. Advanced Ceramics and Composites, January 2007, Daytona Beach, Ed. Wiley, CD-ROM, 7pp.
• 16. Zalas M. and Łaniecki M., Sol. En. Mat. Sol. Cells, 89, 287 (2005).