Issue

Vol. 29 No. 5 (2017): Vol 29 Issue 5

Copyright (c) 2017 AJC

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Bandgap Tailored TiO2 Thin Films by Addition of SiO2 for Enhanced Photocatalytic Activity against Congo Red under Visible Light Illumination

https://doi.org/10.14233/ajchem.2017.20413
M. Sankareswari
Department of Physics, V.V.V. College for Women, Virudhunagar-626 001, India
R. Vidhya
Department of Physics, V.V.V. College for Women, Virudhunagar-626 001, India
P. Malliga
Department of Physics, V.V.V. College for Women, Virudhunagar-626 001, India
I. Rathinamala
Department of Physics, V.V.V. College for Women, Virudhunagar-626 001, India
S. Karuthapandian
Department of Chemistry, VHNSN College, Virudhunagar-626 001, India
K. Neyvasagam
PG and Research Department of Physics, The Madura College, Madurai-625 011, India

Corresponding Author(s) : K. Neyvasagam

srineyvas@yahoo.co.in

Asian Journal of Chemistry, Vol. 29 No. 5 (2017): Vol 29 Issue 5

Abstract

Colloidal solutions of SiO2-TiO2 mixed oxides having different SiO2 contents were synthesized by sol-gel technique and thin films were deposited over glass slides by using dip coating technique. The films were subjected to high temperature at 400 °C for growing TiO2 crystals. Energy dispersive X-ray spectroscopy was used to indicate the elements in the films. X-ray diffraction analysis indicated that SiO2-TiO2 films contain only anatase phase. Scanning electron microscopy was used to study the films surface morphology. The SiO2-TiO2 films that were contacted with congo red (5 ppm) and irradiated with visible light showed a high photocatalytic activity. UV spectrophotometry technique was used to monitor the degradation of congo red by the reduction of main absorbance peak at 497 nm. Complete degradation was achieved after 2 h for 3 mol % SiO2-TiO2 thin film.

Keywords

TiO2 SiO2 Dip coating Congo red Photocatalytic activity
Sankareswari, M., Vidhya, R., Malliga, P., Rathinamala, I., Karuthapandian, S., & Neyvasagam, K. (2017). Bandgap Tailored TiO2 Thin Films by Addition of SiO2 for Enhanced Photocatalytic Activity against Congo Red under Visible Light Illumination. Asian Journal of Chemistry, 29(5), 1085–1090. https://doi.org/10.14233/ajchem.2017.20413
Download Citation
Endnote/Zotero/Mendeley (RIS)
BibTeX
References
  1. L. Lopez, W.A. Daoud and D. Dutta, J. Surf. Coat. Technol., 205, 251 (2010); https://doi.org/10.1016/j.surfcoat.2010.06.028.
  2. J.H. Xin, S.M. Zhang, G.-D. Qi, X.-C. Zheng, W.-P. Huang and S.-H. Wu, J. React. Kinet. Catal. Lett., 86, 291 (2005); https://doi.org/10.1007/s11144-005-0324-0.
  3. K. Hashimoto, H. Irie and A. Fujishima, J. Appl. Phys., 44, 8269 (2005); https://doi.org/10.1143/JJAP.44.8269.
  4. A. Mills, R.H. Davies and D. Worsley, J. Chem. Soc. Rev., 22, 417 (1993); https://doi.org/10.1039/cs9932200417.
  5. N. Negishi, T. Iyoda, K. Hashimoto and A.J. Fujishima, Chem. Lett., 24, 841 (1995); https://doi.org/10.1246/cl.1995.841.
  6. M.R. Hoffmann, S.T. Martin, W. Choi and D.W. Bahnemann, J. Chem. Rev., 95, 69 (1995); https://doi.org/10.1021/cr00033a004.
  7. A. Fujishima, T.N. Rao and D. Tryk, J. Photo. Biol. C, 1, 1 (2000); https://doi.org/10.1016/S1389-5567(00)00002-2.
  8. Q. Jia, Y. Zhang, Z. Wu and P. Zhang, J. Tribol. Lett., 26, 19 (2007); https://doi.org/10.1007/s11249-006-9177-6.
  9. K.L. Yeung, W.K. Leung, N. Yao and S. Cao, J. Catal. Today, 143, 218 (2009); https://doi.org/10.1016/j.cattod.2008.09.036.
  10. S. Cao, K.C. Yeung, J.K.C. Kwan, P.M.T. To and S.C.T. Yu, J. Appl. Catal. B, 86, 127 (2009); https://doi.org/10.1016/j.apcatb.2008.08.019.
  11. H.D. Jang, S.K. Kim and S.J. Kim, J. Nanopart. Res., 3, 141 (2001); https://doi.org/10.1023/A:1017948330363.
  12. R.R. Bacsa and J. Kiwi, J. Appl. Catal. B, 16, 19 (1998); https://doi.org/10.1016/S0926-3373(97)00058-1.
  13. P. Madhusudan, J.R. Ran, J. Zhang, J.G. Yu and G. Liu, J. Appl. Catal. B Environ., 110, 286 (2011); https://doi.org/10.1016/j.apcatb.2011.09.014.
  14. X. Gao, S.R. Bare, J.L.G. Fierro, M.A. Banares and I.E. Wachs, J. Phys. Chem., 102, 5653 (1998); https://doi.org/10.1021/jp981423e.
  15. S.H. Jeong, B.N. Park, S.B. Lee and J.H. Boo, J. Surf. Coat. Technol., 201, 5318 (2007); https://doi.org/10.1016/j.surfcoat.2006.07.185.
  16. Y. Liu and J. Lian, J. Appl. Surf. Sci., 253, 3727 (2007); https://doi.org/10.1016/j.apsusc.2006.08.012.
  17. N.W. Schmidt, T.S. Totushek, W.A. Kimes, D.R. Callender and J.R. Doyle, J. Appl. Phys., 94, 5514 (2003); https://doi.org/10.1063/1.1615694.
  18. J.-P. Lin and J.-M. Wu, J. Appl. Phys. Lett., 92, 134103 (2008); https://doi.org/10.1063/1.2905279.
  19. V. Shelke, M.P. Bhole and D.S. Patil, Mater. Chem. Phys., 141, 81 (2013); https://doi.org/10.1016/j.matchemphys.2013.04.027.
  20. M. Caglar, S. Ilican, Y. Caglar and F. Yakuphanoglu, J. Mater. Sci. Mater. Electron., 19, 704 (2008); https://doi.org/10.1007/s10854-007-9386-2.
  21. E. Rahmani, A. Ahmadpour and M. Zebarjad, Chem. Eng. J., 174, 709 (2011); https://doi.org/10.1016/j.cej.2011.09.073.
  22. P. Senthil Kumar, M. Selvakumar, S. Ganesh Babu, S. Karuthapandian and S. Chattopadhyay, J. Mater. Lett., 151, 45 (2015); https://doi.org/10.1016/j.matlet.2015.03.047.
  23. P.S. Kumar, M. Selvakumar, S.G. Babu, S.K. Jaganathan, S. Karuthapandian and S. Chattopadhyay, RSC Adv., 5, 57493 (2015); https://doi.org/10.1039/C5RA08783J.
  24. M. Bellardita, M. Addamo, A. Di Paola, G. Marcì, L. Palmisano, L. Cassar and M. Borsa, J. Hazard. Mater., 174, 707 (2010); https://doi.org/10.1016/j.jhazmat.2009.09.108.
  25. L.C.-K. Liau, H. Chang, T.C.-K. Yang and C.-L. Huang, J. Chin. Inst. Chem. Eng., 39, 237 (2008); https://doi.org/10.1016/j.jcice.2007.12.014.
  26. Y. Zhiyong, E. Mielczarski, J.A. Mielczarski, D. Laub, L. Kiwi-Minsker, A. Renken and J. Kiwi, J. Mol. Catal. A, 260, 227 (2006); https://doi.org/10.1016/j.molcata.2006.07.021.
  27. K.S. Yao, T.C. Cheng, S.J. Li, L.Y. Yang, K.C. Tzeng, C.Y. Chang and Y. Ko, J. Surf. Coat. Technol., 203, 922 (2008); https://doi.org/10.1016/j.surfcoat.2008.08.006
Read More
Author biographies is not available.
Download
PDF
Statistic
Read Counter : 0 Download : 0