Porous SiO₂/TiO₂ Bilayer Antireflection Coatings with Self-Cleaning Capacity

Abstract:

The porous SiO₂/TiO₂ bilayer antireflection coatings with self-cleaning capacity have been prepared by a sol-gel dip-coating method, the surfactant template, Pluronic F123 (PF123) was added to the sol as a pore generator. The performances of the coatings were analyzed with ultraviolet visible spectrophotometer (UV-Vis), scanning electron microscope (SEM) and atomic force microscopy (AFM). The self-cleaning function of coatings was evaluated by means of photocatalytic degradation of methyl orange in aqueous solution, and mechanical strength of the coatings has also been studied. The results indicate that the average transmittance of porous SiO₂/TiO₂ coating increases by 6% as compared to uncoated glass, the coating has a small particle size, a porous structure and a low roughness. After illuminated by ultraviolet light for 3 h, the 5 mg/L methyl orange can be degraded by 56.5%. In addition, the coating has an excellent mechanical strength.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 2970-2974
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.2970
• Online since: May 2011
• Authors: Ruo Yu Chen, Jian Wu Wang, Hong Ning Wang, Wei Yao, Jing Zhong
• Keywords: Antireflection Coating, Porous SiO₂/TiO₂, Self-Cleaning, Sol-Gel (SG)

References

[1] G.K. Chinyama, A. Roos and B. Karlsson: Sol. Energy Vol. 50 (1993), P. 105

[2] D. Chen: Sol. Energy Mater. Sol. Cells Vol. 68 (2001), P. 313

[3] S. Furbo and L.J. Shah: Sol. Energy Vol. 74 (2003), P. 513

[4] S. Walheim, E. Schäffer, J. Mlynek and U. Steiner: Science Vol. 283 (1999), P. 520

[5] L. Zhang, Y. Xu, D. Wu, Y. Sun, X. Jiang and X. Wei: Opt. Laser Technol. Vol. 40 (2008), P. 282

[6] M.C. Bautista and A. Morales: Sol. Energy Mater. Sol. Cells Vol. 80 (2003), P. 217

[7] A. Vincent, S. Babu, E. Brinley, A. Karakoti, S. Deshpande and S. Seal: J. Phys. Chem. C Vol. 111 (2007), P. 8291

[8] X. Zhang, M. Järn, J. Peltonen, V. Pore, T. Vuorinen, E. Levänen and T. Mäntylä: J. Eur. Ceram. Soc. Vol. 28 (2008), P. 2177

[9] Ö. Kesmez, H.E. Camurlu, E. Burunkaya and E. Arpac: Sol. Energy Mater. Sol. Cells Vol. 93 (2009), P. 1833

[10] T. TÖlke, A. Heft and A. Pfuch: Thin Solid Films Vol. 516 (2008), P. 4578

DOI: 10.1016/j.tsf.2007.05.088

[11] U. Diebold: Surf. Sci. Rep. Vol. 48 (2003), P. 53

[12] A. Morales and A. Duran: J. Sol-Gel Sci. Technol. Vol. 8 (1997), P. 451

[13] K. Biswas, S. Gangopadhyay, H.C. Kim and R.D. Miller: Thin Solid Films Vol. 514 (2006), P. 350

[14] A.L. Linsebigler, G. Lu and J.T. Yates: Chem. Rev. Vol. 95 (1995), P. 735

[15] X.Z. Fu, L.A. Clark, Q. Yang and M.A. Anderson: Environ Sci. Technol. Vol. 30 (1996), P. 647

[16] P. Nostell, A. Roos and B. Karlsson: Thin Solid Films Vol. 351 (1999), P. 170