Artículos de revistas
Photoelectrochemical And Photocatalytic Properties Of Tio 2, Wo 3and Wo 3-tio2 Porous Films In The Photodegradation Of Rhodamine 6g In Aqueous Solution
Registro en:
Science Of Advanced Materials. , v. 4, n. 5-6, p. 673 - 680, 2012.
19472935
10.1166/sam.2012.1337
2-s2.0-84866873012
Autor
Oliveira H.G.
Fitzmorris B.C.
Longo C.
Zhang J.Z.
Institución
Resumen
The photoelectrochemical properties of TiO 2, WO 3 and WO 3-TiO 2 bilayer porous films deposited on transparent electrodes have been investigated and correlated to the photocatalytic activity for Rhodamine 6G (R6G) degradation in aqueous solution under polychromatic irradiation. The WO 3 film, consisting of flakes of 70 nm diameter nanoparticles, exhibited relatively poor activity in R6G photodegradation, which was attributed to low surface coverage. The TiO 2 film, consisting of agglomerated spherical particles (25 nm in diameter) of both anatase and rutile phases based on Raman measurement, showed much better photocatalytic activity. The WO 3-TiO 2 bilayer, consisting of a TiO 2 film deposited on the surface of a WO3 film, exhibited morphology similar to that of the TiO2 film and improved efficiency for R6G photodegradation. The degradation process followed pseudo-first order kinetics for the initial 3 hours for all three film electrodes, with apparent rate constants of 0.37, 2.3, and .8 min-1. The improved performance of the WO 3-TiO 2 bilayer film electrode is attributed to enhanced light harvesting and reduced charge recombination. © 2012 by American Scientific Publishers. 4 5-6 673 680 Gaya, U.I., Abdullah, A.H., (2008) J. Photochem. Photobio., 9 C (1) Yang, J., Chen, C., Ji, H., Ma, W., Zha, J., (2005) J. Phys. Chem., 109 B, p. 21900 Guaraldo, T.T., Pulcinelli, S.H., Zanoni, M.V.B., (2011) J. Photochem. Photobio., 217 A (259) Oliveira, H.G., Nery, D.C., Longo, C., (2010) Appl. Catal. B, 93 (205) Sajjad, A.K.L., Shamaila, S., Tian, B., Chen, F., (2009) J. Zhang, Appl. Catal. B, 91, p. 397 Li, X.Z., Li, F.B., Yang, C.L., Ge, W.K., (2001) J. Photochem. Photobiol. A, 141, p. 209 Tryba, B., Piszcz, M., Morawski, A.W., (2009) International Journal of Photoenergy, 2009 (1) Oliveira, H.G., Silva, E.D., Longo, C., (2010) Proceedings of SPIE Optics+Photonics 2010-Symposium Solar Energy and Applications, pp. 1-5. , San Diego, California, USA, August Hathway, T., Rockafellow, E.M., Youn-Chul, O., Jenks, W.S., (2009) J. Photochem. Photobiol. A, 207, p. 197 Chai, S.Y., Kim, Y.J., Lee, W.I., (2006) J. Electroceram., 17 (909) Yang, X., Dai, W., Guo, C., Chen, H., Cao, Y., Li, H., He, H., Fan, K., (2005) J. Catal., 234, p. 438 Bayati, M.R., Golestani-Fard, F., Moshfegh, A.Z., Molaei, R., (2011) Mater. Chem. Phys., 128 (427) Zhang, H., Lv, X., Li, Y., Wang, Y., Li, J., (2010) ACS Nano, 4, p. 380 He, J., Luo, Q., Cai, Q.Z., Li, X.W., Zhang, D.Q., (2011) Mater. Chem. Phys., 242, p. 129 Higashimoto, S., Sakiyama, M., Azuma, M., (2006) Thin Solid Films, 503, p. 201 Valova, E., Georgieva, J., Armyanov, S., Sotiropoulos, S., Hubin, A., Baert, K., Raes, M., (2010) J. Electrochem. Soc., 157 (D309) Ke, D., Liu, H., Peng, T., Liu, X., Dai, K., (2008) Mater. Lett., 447, p. 62 Akurati, K.K., Vital, J., Dellemann, K., Michalow, T., Graule, D., Ferri, A., (2003) Baiker, Appl. Catal., 79 B, p. 53 Santato, C., Odziemkowski, M., Ulmann, M., Augustiyski, J., (2001) J. Am. Chem. Soc., 123, p. 10639 Zhou, L., Ren, Q., Zhou, X., Tang, J., Chen, Z., Yu, C., (2008) Microporous Mesoporous Mater, 109, p. 248 Wolcott, A., Kuykendall, T.R., Chen, W., Chen, S., Zhang, J.Z., (2006) J. Phys. Chem., 110 B, p. 25288 Kim, H.W., Kim, H.S., Na, H.G., Yang, J.C., Kim, D.Y., (2010) J. Alloys Compd., 504 (217) Gotic, M., Ivanda, M., Popovic, S., Music, S., Sekulic, A., Turkovic, A., Furic, K., (1997) J. Raman Spectrosc., 28, p. 555 Ohsaka, T., (1980) J. Phys. Soc. Jpn., 48, p. 1661 Yoon, K.H., Lee, J.W., Cho, Y.S., (1996) J. Appl. Phys., 80, p. 6813 Long, M., Cai, W., Kisch, H., (2008) J. Phys. Chem. C, 112 (548) Alpucho-Avilos, M.A., Wu, Y., (2009) J. Amer. Chem. Soc., 131, p. 3216 Paulauskas, I.E., Katz, J.E., Jellison Jr., G.E., Lewis, N.S., Boatner, L.A., Brown, G.M., (2009) J. Electrochem. Soc., 156 (B580) Hepel, M., Hazelton, S., (2005) Electrochim. Acta, 50, p. 5278 Sprünken, H.R., Schumacher, R., Schindler, R.N., (1980) Faraday Discuss. Chem. Soc., 70 (55) Smith, W., Wolcott, A., Fitzmorris, R.C., Zhang, J.Z., Zhao, Y., (2011) J. Mater. Chem., 21, p. 10792 Bard, A.J., Stratmann, M., Licht, S., Encyclopedy of Photoelectrochemistry (2002) Semiconductor Electrodes and Photoeletrochemistry, p. 6. , John Wiley & Sons, Inc., Hoboken, NJ Gratzel, M., (2001) Nature, 414, p. 338 Quan, X., Chen, S., Su, J., Chen, J., Chen, G., (2004) Sep. Pur. Tech., 34 (73) West, D.P., Rahn, M.D., Im, C., Bassler, H., (2000) Chem. Phys. Lett., 326 (407) Evans, D.H., (2008) Chem. Rev., 2113, p. 108 Wang, Q., Chen, C., Zhao, D., Ma, W., Zhao, J., (2008) Langmuir, 24, p. 7338 Tada, H., Akazawa, M., Kubo, Y., Ito, S., (1998) J. Phys. Chem. B, 102, p. 63060 Qamar, M., Gondal, M.A., Yamani, Z.H., (2010) Catal. Commun., 11 (768) Gondal, M.A., Chang, X.F., Yamani, Z.H., (2010) Chem. Eng. J., 165, p. 250 He, Z., Sun, C., Yang, S., Ding, Y., He, H., Wang, Z., (2009) J. Hazard. Mater., 162 (1477) Georgekutty, R., Seery, M.K., Pillai, S.C., (2008) J. Phys. Chem. C, 112, p. 13563