The Effect of Reactive Red 4 Dye as a Sensitizer in Enhancing Photocatalytic Activity of TiO₂ for Degradation of Methyl Orange

Abstract:

In this work, anionic RR4 dye was used to sensitize TiO2/PVA and TiO2/PEG immobilized system in enhancing photocatalytic degradation of anionic methyl orange (MO) dye. 0.3g of TiO2 and polymer binder was coated onto a clean glass plate by using brush technique to develop optimum immobilize TiO2 system. A comparison study between immobilized TiO2/PVA (Im/TiO2/PVA) and immobilized TiO2/PEG (Im/TiO2/PEG) system with and without RR4 sensitizer were carried out under 55-W fluorescent lamp and visible light irradiation. The photocatalytic degradation of MO was significantly enhanced for both RR4 dye sensitized Im/TiO2/PVA and Im/TiO2/PEG with first order rate constant was ca. 0.080 min-1 and 0.071 min-1 respectively under 55-W fluorescent lamp. Same observation as well under visible light irradiation whereby enhanced of those RR4 sensitized immobilized photocatalysts were recorded as compared with immobilized photocatalysts without RR4 as sensitizer. The photocatalytic enhancement under Im/TiO2/PVA/RR4 and Im/TiO2/PEG/RR4 are due to the ability of RR4 dye to become electron (e-) donor for conduction band (CB) of TiO2, thus making TiO2 CB riches with electron, eventually this e is used to remove MO dye by producing hydroxyl radical.

• Periodical: Applied Mechanics and Materials (Volume 835)
• Pages: 366-371
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.835.366
• Online since: May 2016
• Authors: F. Bakar, M.S. Azami, S.K. Ain, Nur Raihan Zaharudin, Wan Izhan Nawawi
• Keywords: Dye Sensitizer, Immobilization, Methyl Orange, PEG, PVA, Titanium Dioxide

References

[1] J.W. Clay, World Agriculture and the Environment: a Commodity-by commodity, Guide to Impacts and Practices. Island Press, Washington D.C. (2004), London.

[2] J.C. Garcia, J.I. Simionato, A. Eugenio, C. da Silva, J. Nozaki, N.E. de Souza, Solar photocatalytic degradation of real textile effluents by associated titanium dioxide and hydrogen peroxide. Sol. Energy, 83 (2009) 316-322.

DOI: 10.1016/j.solener.2008.08.004

[3] M. Pera-Titus, V. Garcia-Molina, M.A. Banos, J. Gimenez, S. Esplugas, Degradation of chlorophenols by means of advanced oxidation processes: a general review, Appl. Catal. B 47 (2004) 219–256.

DOI: 10.1016/j.apcatb.2003.09.010

[4] K. Ikehata, M.G. El-Din, Aqueous Pesticide Degradation by Ozonation and Ozone-Based Advanced Oxidation Processes: A Review (Part I), Ozone-Sci. Eng. 27 (2005) 83-114.

DOI: 10.1080/01919510590925220

[5] K. Ikehata, M.G. El-Din, Aqueous pesticide degradation by hydrogen peroxide/ultraviolet irradiation and Fenton-type advanced oxidation processes: a review, J. Environ. Eng. Sci. 5 (2006) 81-135.

DOI: 10.1139/s05-046

[6] D. Chatterjee and S. Dasgupta, Visible light induced photocatalytic degradation of organic pollutans, J. Photochem. Photobiol. C: Photochem. Rev. 6 (2005) 186-205.

[7] M.N. Chong, B. Jin, C.W.K. Chow, C. Saint, Recent developments in photocatalytic water treatment technology: a review, Water Res. 44 (2010) 2997–3027.

DOI: 10.1016/j.watres.2010.02.039

[8] M.A. Nawi, Ali H. Jawad, S. Sabar, W.S. Wan Ngah. Immobilized bilayer TiO2/chitosan system for the removal of phenol under irradiation by a 45 watt compact fluorescent lamp. Desalination 280 (2011) 288–296.

DOI: 10.1016/j.desal.2011.07.013

[9] P.V. Kamat and M.A. Fox, Photosensitization of TiO2 colloids by Erythrosin B in acetonitrile, Chem. Phys. Lett. 102(4) (1983) 379-384.

DOI: 10.1016/0009-2614(83)87060-2

[10] J. Moser, M. Gratzel, Photosensitized electron injection in colloidal semiconductors, J. Am. Chem. Soc. 160(22) (1984) 6557-6564.

DOI: 10.1021/ja00334a017

[11] R.W. Fessenden and P.V. Kamat, Photosensitized charge injection into TiO2 particles as studied by microwave absorption, Chem. Phys. Lett. 123(3) (1986) 233-238.

DOI: 10.1016/0009-2614(86)80020-3

[12] Y. Liang, A.M. Ponte Goncalves and D.K. Negus, Picosecond fluorescence lifetime measurements on dyes adsorbed at semiconductor and insulator surfaces, J. Phys. Chem. 87(1) (1983) 1-4.

DOI: 10.1021/j100224a001

[13] R.L. Crackel and W.S. Struve, Non-radiative excitation decay of cresyl violet on TiO2: variation with dye-surface separation, Chem. Phys. Lett. 120 (1985) 473-476.

DOI: 10.1016/0009-2614(85)85643-8

[14] B. Patrick and P.V. Kamat, Photoelectrochemistry in semiconductor particulate systems. 17. Photosensitization of large-bandgap semiconductors: charge injection from triplet excited thionine into zinc oxide colloids, J. Phys. Chem. 96 (1992).

DOI: 10.1021/j100182a072

[15] P.V. Kamat, J.P. Chauvet and R.W. Fessenden, Photoelectrochemistry in particulate systems. 4. Photosensitization of a titanium dioxide semiconductor with a chlorophyll analog, J. Phys. Chem. 90 (1986) 1389 1394.

DOI: 10.1021/j100398a035

[16] P.V. Kamat, Photoelectrochemistry in particulate systems. 9. Photosensitized reduction in a colloidal titania system using anthracene-9-carboxylate as the sensitizer, J. Phys. Chem. 93 (1989) 859-864.

DOI: 10.1021/j100339a062

[17] K. Kalyanasundaram, M. Gratzel, N. Vlachopoulos, V. Krishnan and A. Monnier, Sensitization of titanium dioxide in the visible light region using zinc porphyrins, J. Phys. Chem. 91 (1987) 2342-2347.

DOI: 10.1021/j100293a027

[18] F.R.F. Fan, A.J. Bard, Spectral sensitization of the heterogeneous photocatalytic oxidation of hydroquinone in aqueous solutions at phthalocyanine-coated titanium dioxide powders, J. Am. Chem. Soc. 101 (1979) 6139-6140.

DOI: 10.1021/ja00514a056

[19] K. Kemnitz, K. Yoshihara and T.J. Tani, Short and excitation-independent fluorescence lifetimes of J-aggregates adsorbed on silver(I) bromide and silica, J. Phys. Chem. 94 (1990) 3099-3104.

DOI: 10.1021/j100370a065

[20] G.S. Mital, T. Manoj. A review of TiO2 nanoparticles. Chinese Sci. Bull. (2011) 1639-1657.