Intermediate Ce3+ defect level induced photoluminescence and third-order nonlinear optical effects in TiO2–CeO2 nanocomposites
Source abstract
Abstract
We report on the linear and nonlinear optical studies of TiO2–CeO2 nanocomposites. It was found that the band gap of the nanocomposite can be tuned by varying Ce/Ti content. Nonlinear absorption characteristics of these samples were studied by employing open aperture Z-scan technique using an Nd:YAG laser (532 nm, 7 ns, 10 Hz). It has been observed that as the CeO2 amount increases, band gap of the nanocomposites decreases and the reason proposed for the change in band gap is the smudging of localised states of Ce3+ into the forbidden energy gap, thus acting as the intermediate state. Fluorescence studies confirmed the above argument. Nonlinear investigation revealed that with increase in the CeO2 amount, the two-photon absorption coefficient increased due to the modification of TiO2 dipole symmetry. Suitable candidature of the nanocomposites for the fabrication of nonlinear optical devices was proved by determining the optical limiting threshold.
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Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Nonlinear Optical Materials Studies · Laser-Ablation Synthesis of Nanoparticles
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References (34)
Show source-provided references
1. A.N. Banerjee, The design, fabrication, and photocatalytic utility of anostructured semiconductors: focus on TiO2-based nanostructures, NSA 4, 35–65 (2011)10.2147/NSA.S9040 ↗
2. A. Fujishima, K. Honda, Electrochemical photocatalysis of water at a semiconductor electrode. Nature 238(5358), 37–38 (1972)10.1038/238037a0 ↗
3. B. Ohtani, R.M. Bowman, D.P. Colombo, H. Kominami, H. Noguchi, K. Uosaki, Femtosecond diffuse reflectance spectroscopy of aqueous titanium(IV) oxide suspension: correlation of electron-hole recombination kinetics with photocatalytic activity. Chem. Lett. 27(7), 579–580 (1998)10.1246/cl.1998.579 ↗
4. A. Fujishima, X.T. Zhang, D.A. Tryk, TiO2 photocatalysis and related surface phenomena. Surf. Sci. Rep. 63(12), 515–582 (2008)10.1016/j.surfrep.2008.10.001 ↗
5. J.C. Zhao, C.C. Chen, W.H. Ma, Photocatalytic degradation of organic pollutants under visible light irradiation. Top. Catal. 35(3–4), 269–278 (2005)10.1007/s11244-005-3834-0 ↗
6. S. Klosek, D. Raftery, Visible-light driven V-doped TiO2 photocatalyst and its photooxidation of ethanol. J. Phys. Chem. B 105, 2815–2819 (2001)10.1021/jp004295e ↗
7. M. Satish, B. Vishwanathan, R.P. Vishwanath, C.S. Gopinath, Synthesis, characterization, electronic structure, and photocatalytic activity of nitrogen-doped TiO2 nanocatalyst. Chem. Mater. 17, 6349–6353 (2005)10.1021/cm052047v ↗
8. Y. Bassekhouad, N. Chaoui, M. Trzpit, N. Ghazzal, D. Robert, J.V. Weber, UV–Vis versus visible degradation of Acid Orange II in a coupled CdS/TiO2 semiconductors suspension films. Photochem. Photobiol. A 183, 218–224 (2006)10.1016/j.jphotochem.2006.03.025 ↗
9. G. Magesh et al., Photocatalytic behaviour of CeO2–TiO2 system for the degradation of methylene blue. Indian J. Chem. 48A, 480–488 (2009)
10. Y. Xie, C. Yuan, Photocatalysis of neodymium ion modified TiO2 sol under visible light irradiation. Appl. Surf. Sci. 221, 17–24 (2004)10.1016/S0169-4332(03)00945-0 ↗
11. T. Tong, J. Zhang, B. Tian, F. Chen, D. He, M. Anpo, Preparation of Ce-TiO2 catalysts by controlled hydrolysis of titanium alkoxide based on esterification reaction and study on its photocatalytic activity. J. Coll. Interface Sci. 351, 382–388 (2007)10.1016/j.jcis.2007.06.051 ↗
12. P.F. Ji, J.L. Zhang, F. Chen, M. Anpo, Study of adsorption and degradation of acid orange 7 on the surface of CeO2 under visible light irradiation. Appl. Catal. B 85(3–4), 148–154 (2009)
13. G.R. Bamwenda, K. Sayama, H. Arakawa, The photoproduction of O2 from a suspension containing CeO2 and Ce4+ cations as an electron acceptor. Chem. Lett. 28(10), 1047–1048 (1999)10.1246/cl.1999.1047 ↗
14. S. Liu, X.J. Zhao, N.Z. Zhang, Q.N. Zhao, X. He, J.Y. Feng, ‘Photocatalytic mechanism of TiO2–CeO2 films prepared by magnetron sputtering under UV and visible light. Surf. Sci. 595, 203–211 (2005)10.1016/j.susc.2005.08.016 ↗
15. A.W. Xu, Y. Gao, H.Q. Liu, The preparation, characterisation and their photocatalytic activities of rare earth doped TiO2 nanoparticles. J. Catal. 207, 151–157 (2002)10.1006/jcat.2002.3539 ↗
16. T. Tong, J. Zhang, B. Tian, F. Chen, D. He, M. Anpo, Preparation of Ce-TiO2 catalysts by controlled hydrolysis of titanium alkoxide based on esterification reaction and study on its photocatalytic activity. J. Colloid Interface Sci. 315, 382–388 (2007)10.1016/j.jcis.2007.06.051 ↗
17. W.M. Yen, M. Raukas, S.A. Basun, W.V. Schaik, U. Happek, Optical and photoconductive properties of cerium doped crystalline solids. J. Lumin. 69, 287–294 (1996)10.1016/S0022-2313(96)00107-X ↗
18. C. Chinnock, Laser-based systems easily find semiconductor defects. Laser Focus World 30, 28–34 (1994)
19. A. Verma, A.G. Joshi, Structural, optical, photoluminescence and photocatalytic characteristics of sol-gel derived CeO2–TiO2 films. Indian J. Chem. 48 A, 161–167 (2009)
20. M.S. Bahae, A.A. Said, E.W. Van Stryland, High-sensitivity, single-beam n2 measurements. Opt. Lett. 14, 955–957 (1989)10.1364/OL.14.000955 ↗
21. F.B. Li, X.Z. Li, M.F. Hou, K.W. Cheah, W.C.H. Choy, Enhanced photocatalytic activity of Ce3+-TiO2 for 2-mer-captobenzothiazole degradation in aqueous suspension for odour control. Appl. Catal. A 285, 181–189 (2005)10.1016/j.apcata.2005.02.025 ↗
22. J. Xiea, D. Jianga, M. Chena, D. Lia, J. Zhua, X. Lua, C. Yan, Preparation and characterization of monodisperse Ce-doped TiO2 microspheres with visible light photocatalytic activity. Colloids Surf. A 372, 107–114 (2010)10.1016/j.colsurfa.2010.09.037 ↗
23. C. Fu, T. Li, J. Qi, J. Pan, S. Chen, C. Cheng, Theoretical study on the electronic and optical properties of Ce3+ doped TiO2 photocatalysts. Chem. Phys. Lett. 494, 117–122 (2010)10.1016/j.cplett.2010.05.085 ↗
24. S.W. Chen, J.M. Lee, K.T. Lu, C.W. Pao, J.F. Lee, T.S. Chan, J.M. Chen, Band gap narrowing of TiO2 doped with Ce probed with X-ray absorption spectroscopy. Appl. Phys. Lett. 97, 012104–012106 (2010)10.1063/1.3460916 ↗
25. H. Deng, J.M. Hossenlopp, Combined X ray diffraction and diffuse reflectance analysis of nanocrystalline mixed Sn (IV) and Sn (II) oxide powder. J. Phys. Chem. B 109, 66–73 (2005)10.1021/jp047812s ↗
26. J. Yang, Y.Q. Gao, J. Wu, Z.M. Huang, X.J. Meng, M.R. Shen, J.L. Sun, J.H. Chu, Temperature dependent optical properties of Mn doped (Pb, Sr)TiO3 foller electric films in absorption region: electron phonon interaction. J. Appl. Phys. 108, 114102–114106 (2010)10.1063/1.3516157 ↗
27. Biswajit Choudhury, Bikash Borah, Amarjyoti Choudhury, Extending photocatalytic activity of TiO2 nanoparticles to visible region of illumination by doping of cerium. Photochem. Photobiol. 88(2), 257–264 (2012)10.1111/j.1751-1097.2011.01064.x ↗
28. Z. Wang, Z. Quan, J. Lin, Remarkable changes in the optical properties of CeO2 nanocrystals induced by lanthanide ions doping. Inorg. Chem. 46(13), 5237–5242 (2007)10.1021/ic0701256 ↗
29. L. Yin, Y. Wang, G. Pang et al., Sonochemical synthesis of cerium oxide nanoparticles-effect of additives and quantum size effect. J. Coll. Interface Sci. 246(1), 78–84 (2002)10.1006/jcis.2001.8047 ↗
30. M. Sheik-bahae, T. Rossi, H.S. Kwok, Frequency dependence of the two-photon absorption coefficient in InSb: tunneling effects. J. Opt. Soc. Am. B. 4(12), 1964–1969 (1987)10.1364/JOSAB.4.001964 ↗
31. S.X. Wang, L.D. Zhang, H. Su, Z.P. Zhang, G.H. Li, G.W. Meng, J. Zhang, Y.W. Wang, J.C. Fan, T. Gao, Two-photon absorption and optical limiting in poly (styrene maleic anhydride)/TiO2 nanocomposites. Phys. Lett. A 281, 59–63 (2001)10.1016/S0375-9601(00)00846-X ↗
32. D. Torres-Torres, M. Trejo-Valdez, L. Castañeda, C. Torres-Torres, L. Tamayo-Rivera, R.C. Fernández-Hernández, J.A. Reyes-Esqueda, J. Muñoz-Saldaña, R. Rangel-Rojo, A. Oliver, Inhibition of the two-photon absorption response exhibited by a bilayer TiO2 film with embedded Au nanoparticles. Opt. Express 18(16), 16406–16417 (2010)10.1364/OE.18.016406 ↗
33. M. Sheik-Bahae, D.J. Hagan, E.W. Van Stryland, Dispersion and band-gap scaling of the electronic kerr effect in solids associated with 2-photon absorption. Phys. Rev. Lett. 65, 96–99 (1990)10.1103/PhysRevLett.65.96 ↗
34. B.S. Wherrett, A.C. Walker, F.A.P. Tooley, in Optical Nonlinearities and Instabilities in Semiconductors, ed. by H. Haug (Academic, New York, 1988), pp. 239–27210.1016/B978-0-12-332915-8.50014-3 ↗