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Study on reflectivity and photostability of Al-doped TiO2 nanoparticles and their reflectors

  • Sanjeev Kumar (a1), Narendra Kumar Verma (a1) and Madan Lal Singla (a2)

Abstract

The effect of Al doping on the reflective properties of TiO2 nanoparticles, synthesized by sol–gel method, has been investigated. It has been observed that with Al doping, the phase transition temperature for anatase to rutile phase increases; however, no change in morphology has been observed. No additional absorption edge was found in the absorption spectra, but a weak luminescent peak was noticed in the photoluminescence spectra. TiO2nanoparticles with 0.1% Al doping show higher photostability with practically no change in reflectance. A coating material has been prepared by dispersing these synthesized nanoparticles in water solution of organic binder. Coating material parameters such as pigment to binder weight ratio, solvent ratio, pH of solution have been taken into care to make the coating material flowable with good ability to adhere. Their coating was applied on a plastic substrate with different coating thicknesses to design light reflectors. These reflectors have been found to have diffuse reflectance of 98.17–98.29% for the 0.25-mm-thick coating.

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Corresponding author

a)Address all correspondence to this author. e-mail: skumar.nano@thapar.edu, kumarsanju25@gmail.com

References

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1.Buxbaum, G. and Pfaff, G.: Industrial Inorganic Pigments, 3rd ed. (Wiley-VCH, Strauss GmbH, Morlenbach, Germany, 2005), p. 51.
2.Nelson, K. and Deng, Y.: Enhanced light scattering from hollow polycrystalline TiO2 particles in a cellulose matrix. Langmuir 24, 975 (2008).
3.Gargo, D.: Particles for effect and colour. Eur. Coat. J. 1, 12 (2011).
4.Baiju, K.V., Shukla, S., Sandhya, K.S., James, J., and Warrier, K.G.K.: Photocatalytic activity of sol-gel derived nanocrystalline titania. J. Phys. Chem. C 111, 7612 (2007).
5.Eastaugh, N., Walsh, V., Chaplin, T., and Siddall, R.: The Pigment Compendium, 1st ed. (Elsevier Butterworth-Heinemann, Burlington, UK, 2004), p. 63.
6.Ray, A.K., Tracey, S.M., McQuillin, B., and Hodgson, S.N.B.: Optical studies on sol-gel derived titanium dioxide films. IEEE Proc. Sci. Meas. Technol. 147(6), 301 (2000).
7.Tayade, R.J., Surolia, P.K., Kulkarni, R.G., and Jasra, R.V.: Photocatalytic degradation of dyes and organic contaminants in water using nanocrystalline anatase and rutile TiO2. Sci. Technol. Adv. Mater. 8(6), 455 (2007).
8.Pedraza-Avella, J.A., Lopez, R., Martinez-Ortega, F., Paez-Mozo, E.A., and Gomez, R.: Effect of chromium doping on visible light absorption of nanosized titania sol-gel. J. Nano Res. 5(1), 95 (2009).
9.Abelli, M., Bastiani, F.D., and Romagnoli, M.: Reflective paint and a method for its use. U.S. Patent No. US 2004/0013900 A1, June 2012.
10.Vurgaftman, I. and Singh, J.: Laser cavity mirror imperfections and reflectivity: A time-dependent numerical approach. Appl. Phys. Lett. 66, 288 (1995).
11.Mikhailov, M.M. and Sokolovskii, A.N.: Efficiency of treating white pigments with aluminium oxide nanopowders. Russ. Phys. J. 50(7), 733 (2007).
12.Karvinen, S.M.: The effects of trace element doping on the optical properties and photocatalytic activity of nanostructured titanium dioxide. Ind. Eng. Chem. Res. 42, 1035 (2003).
13.Yin, S., Komatsu, M., Zhang, Q., Saito, F., and Sato, T.: Synthesis of visible-light responsive nitrogen/carbon doped titania photocatalyst by mechanochemical doping. J. Mater. Sci. 42(7), 2399 (2007).
14.Grzmil, B., Rabe, M., Kic, B., and Lubkowski, K.: Influence of phosphate, potassium, lithium, and aluminium on the anatase-rutile phase transformation. Ind. Eng. Chem. Res. 46(4), 1018 (2007).
15.Chen, X. and Mao, S.S.: Titanium dioxide nanomaterials: Synthesis, properties, modifications and applications. Chem. Rev. 107(7), 2891 (2007).
16.Anuradha, T.V. and Ranganathan, S.: Nanocrystalline TiO2 by three different synthesis approaches: A comparison. Bull. Mater. Sci. 30(3), 263 (2007).
17.Yang, P., Lu, M., Xu, D., Yuan, D., Chang, J., Zhou, G., and Pan, M.: Strong green luminescence of Ni2+−doped ZnS nanocrystals. Appl. Phys. A 74, 525 (2002).
18.Kumar, S., Verma, N.K., and Singla, M.L.: Size dependent reflective properties of TiO2 nanoparticles and reflectors made thereof. Dig. J. Nanomater. Bios. 7(2), 607 (2012).
19.Periyat, P., Baiju, K.V., Mukundan, P., Pillai, P.K., and Warrier, K.G.K.: Aqueous colloidal sol-gel route to synthesize nanosized ceria-doped titania having high surface area and increased anatase phase stability. J. Sol-Gel Sci. Technol. 43(3), 299 (2007).
20.Mingce, L., Weimin, C., Heng, C., and Jun, X.: Preparation, characterization and photocatalytic activity of visible light driven chlorine-doped TiO2. Front. Chem. Chin. 2, 278 (2007).
21.Zachariah, A., Baiju, K.V., Shukla, S., Deepa, K.S., James, J., and Warrier, K.G.K.: Synergistic effect in photocatalysis as observed for mixed-phase nanocrystalline titania processed via sol-gel solvent mixing and calcination. J. Phys. Chem. C. 112(30), 11345 (2008).
22.Das, K., Sharma, S.N., Kumar, M., and De, S.K.: Morphology dependent luminescence properties of co doped TiO2 nanostructures. J. Phys. Chem. C 113 14783 (2009).
23.Li, D., Haneda, H., Hishita, S., and Ohashi, N.: Visible-light-driven N-F-codoped TiO2 photocatalyst. 2. Optical characterization, photocatalysis, and potential application to air purification. Chem. Mater. 17, 2596 (2005).
24.Gesenhues, U.: Doping of TiO2 pigment by Al3+. Solid State Ionics 101, 1171 (1997).
25.Gesenhues, U. and Rentschler, T.: Crystal growth and defect structure of Al3+ -doped rutile. J. Solid State Chem. 143, 210 (1999).
26.Wang, D.L., Watson, S., Sung, L.P., Tseng, I.H., Bouis, C.J., and Fernando, R.: Effect of TiO2 pigment type on the UV degradation of filled coatings. J. Coat. Technol. Res. 8, 19 (2011).
27.Prasad, K., Pinjari, D.V., Pandit, A.B., and Mhaske, S.T.: Phase transformation of nanostructured titanium dioxide from anatase-to-rutile via combined ultrasonic assisted sol-gel technique. Ultrason. Sonochem. 17, 409 (2010).
28.Jaroenworaluck, A., Sunsaneeyametha, W., Kosachan, N., and Stevens, R.: Characteristics of silica-coated TiO2 and its UV absorption for sunscreen cosmetic applications. Surf. Interface Anal. 38(4), 473 (2006).
29.Mager, M.: Composition comprising inorganic UV absorbers. U.S. Patent No. US 2004/6790273, September 2004.
30.Whately, W.R.: Nonchalking titanium dioxide production. U.S. Patent No. US 1954/2671031, February 1954.
31.Hanssen, L.: Integrating-sphere system and method for absolute measurement of transmittance, reflectance, and absorptance of specular samples. Appl. Opt. 40(19), 3196 2001.

Keywords

Study on reflectivity and photostability of Al-doped TiO2 nanoparticles and their reflectors

  • Sanjeev Kumar (a1), Narendra Kumar Verma (a1) and Madan Lal Singla (a2)

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