Synthesis, optical and photocatalytic properties of mesoporous iron doped titania films
Abstract
Semiconductive films based on iron doped titania are investigated to clarify the role of the doping agent content on their optical features, adsorption capability and photocatalytic properties. The titania films doped with iron ions (1–50 mol %) with highly developed mesoporous surface are synthesized by sol-gel method. The band edge shift towards visible part of the absorption spectrum becomes more pronounced with the increase in iron content pointing on the narrowing of the band gap of the semiconductor.Inhomogeneous distribution of iron atoms in the titania matrix between surface and bulk takes place as shown by EDS analysis. The formation of nanosized particles in the range of 25–50 nm is revealed by SEM images. The adsorption degree of the tetracycline hydrochloride molecules onto the film surface is strongly dependent on the film composition. Twice and thrice enhancement in the photocatalytic destruction of tetracycline hydrochloride under visible irradiation is fixed for the films containing 25 and 50 % iron ions, respectively, comparing with the pristine titania. It is proven that the photocatalytic degradation of tetracycline hydrochloride follows onto the surface of the photocatalyst.References
1. Diebold U. The surface science of titanium dioxide. Surf. Sci. Rep. 2003. 48(5–8): 53. https://doi.org/10.1016/S0167-5729(02)00100-0
2. Fujishima A., Rao T.N., Tryk D.A. Titanium dioxide photocatalysis. J. Photochem. Photobiol. C. 2000. 1(1): 1. https://doi.org/10.1016/S1389-5567(00)00002-2
3. Yamashita H., Harada M., Misaka J., Takeuchi M., Neppolian B., Anpo M. Photocatalytic degradation of organic compounds diluted in water using visible light-responsive metal ion-implanted TiO2 catalysts: Fe ion-implanted TiO2. Catal. Today. 2003. 84(3–4): 191. https://doi.org/10.1016/S0920-5861(03)00273-6
4. Naeem K., Ouyang F. Preparation of Fe3+-doped TiO2 nanoparticles and its photocatalytic activity under UV light. Physica B. 2010. 405(1): 221. https://doi.org/10.1016/j.physb.2009.08.060
5. Zhang Ya., Li Q. Synthesis and characterization of Fe-doped TiO2 films by electrophoretic method and its photocatalytic activity toward methyl orange. Solid State Sci. 2013. 16: 16. https://doi.org/10.1016/j.solidstatesciences.2012.11.012
6. Ganesh D.I., Kumar P.P., Gupta A.K., Sekhar P.S.C., Radha K., Padmanabham G., Sundararajan G. Preparation and characterization of Fe-doped TiO2 powders for solar light response and photocatalytic applications. Process. Appl. Ceram. 2012. 6(1): 21–36. https://doi.org/10.2298/PAC1201021G
7. Lezner M., Grabowska E., Zaleska A. Preparation and photocatalytic activity of iron modified titanium dioxide photocatalyst. Physicochemical Problems of Mineral Processing. 2012. 48(1): 193.
8. Sooda S., Umarb A., Mehtaa S.K., Kansald S.K. Highly effective Fe-doped TiO2 nanoparticles photocatalysts for visible-light driven photocatalytic degradation of toxic organic compounds. J. Colloid Interface Sci. 2015. 450: 213. https://doi.org/10.1016/j.jcis.2015.03.018
9. Linnik O., Kisch H. On the mechanism of nitrogen fixation at nanostructured iron titanate films. Photochem. Photobiol. Sci. 2006. 5(10): 938. https://doi.org/10.1039/b608396j
10. Garza-Arévalo J.I., García-Montes I., Reyes M.H., Guzmán-Mar J.L., Rodríguez-González V., Reyes L.H. Fe doped TiO2 photocatalyst for the removal of As(III) under visible radiation and its potential application on the treatment of As-contaminated groundwater. Mater. Res. Bull. 2016. 73: 145. https://doi.org/10.1016/j.materresbull.2015.08.034
11. Lin Lu, Wang H., Luo H., Xu P. Enhanced photocatalysis using side-glowing optical fibers coated with Fe-doped TiO2 nanocomposite thin films. J. Photochem. Photobiol., A. 2015 307–308: 88.
12. Abidov A., Allabergenov B., Lee J., Jeon H., Jeong S., Kim S. X-ray photoelectron spectroscopy characterization of Fe doped TiO2. International Journal of Materials, Mechanics and Manufacturing. 2013. 1(3): 294. https://doi.org/10.7763/IJMMM.2013.V1.63
13. Bapna K., Phase D.M., Choudhary R.J. Study of valence band structure of Fe doped anatase TiO2 thin films. J. Appl. Phys. 2011. 110(4): 043910. https://doi.org/10.1063/1.3624775
14. Zhang Y., Shen Y., Gu F., Wu M., Xie Y., Zhang J. Influence of Fe ions in characteristics and optical properties of mesoporous titanium oxide thin films. Appl. Surf. Sci. 2009. 256(1): 85. https://doi.org/10.1016/j.apsusc.2009.07.074
15. Wen L., Liu B., Zhao X., Nakata K., Murakami T., Fujishima A. Synthesis, characterization, and photocatalysis of Fe-doped TiO2. A combined experimental and theoretical study. Int. J. Photoenergy. 2012. 2012: ID 368750.
16. Naceur J.B., Mechiakh R., Bousbih F., Chtourou R. Influences of the iron ion (Fe3+)-doping on structural and optical properties of nanocrystalline TiO2 thin films prepared by sol-gel spin coating. Appl. Surf. Sci. 2011. 257(24): 10699. https://doi.org/10.1016/j.apsusc.2011.07.082
17. Wang M.C., Lin H.J., Yang T.S. Characteristics and optical properties of iron ion (Fe3+)-doped titanium oxide thin films prepared by a sol-gel spin coating. J. Alloys Compd. 2009. 473(1–2) 394. https://doi.org/10.1016/j.jallcom.2008.05.105
18. Yalcin Y., Kilic M., Cinar Z. Fe+3-doped TiO2: a combined experimental and computational approach to the evaluation of visible light activity. Appl. Catal. B. 2010. 99(3–4): 469. https://doi.org/10.1016/j.apcatb.2010.05.013
19. Luu C.L., Nguyen Q.T., Ho S.T. Synthesis and characterization of Fe-doped TiO2 photocatalyst by the sol–gel method. Adv. Nat. Sci.: Nanosci. Nanotechnol. 2010. 1(1): 15008.
20. Wang J., Liu Z., Cai R. A new role for Fe3+ in TiO2 hydrosol: accelerated photodegradation of dyes under visible light. Environ. Sci. Technol. 2008. 42(15): 5759. https://doi.org/10.1021/es800616b
21. Blatt F.J. Physics of Electronic Conduction in Solids. Band gap. (McGraw-Hill, 1968).
22. Vasylevskii A., Konoplev H., Panov M. Optical and physical investigation methods: methodical instructions to laboratory works on disciplines "Optical and physical investigation methods". "Optical and physical investigation methods of materials and thin film structures". (St. Petersburg: State Electrotechnical University, 2011). P. 56.
23. Rusina O., Linnik O., Eremenko A., Kisch H. Nitrogen photofixation on nanostructured iron titanate films. Chemistry. 2003. 9(2): 561. https://doi.org/10.1002/chem.200390059
24. Hashimoto K., Irie H., Fujishima A. TiO2 photocatalysis: A historical overview and future prospects. Jpn. J. Appl. Phys. 2005. 44(1): 8269. https://doi.org/10.1143/JJAP.44.8269
25. Katoh R., Furube A., Yamanaka K., Morikawa T. Charge separation and trapping in N-doped TiO2 photocatalysts: a time-resolved microwave conductivity study. J. Phys. Chem. Lett. 2010. 1(22): 3261. https://doi.org/10.1021/jz1011548
26. Hu X., An T., Zhang M., Sheng G., Fu J. Preparation and photocatalytic activities of Fe+3 doped nanometer TiO2 composites. Res. J. Chem. Environ. 2007. 11(4): 13.
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