Skip to main content
SpringerLink
Log in

Micro-arc oxidization fabrication and ethanol sensing performance of Fe-doped TiO2 thin films

  • Published:
International Journal of Minerals, Metallurgy, and Materials Aims and scope Submit manuscript

Abstract

In-situ pure TiO2 and Fe-doped TiO2 thin films were synthesized on Ti plates via the micro-arc oxidation (MAO) technique. The as-fabricated anatase TiO2 thin film-based conductometric sensors were employed to measure the gas sensitivity to ethanol. The results showed that Fe ions could be easily introduced into the MAO-TiO2 thin films by adding precursor K4(FeCN)6·3H2O into the Na3PO4 electrolyte. The amount of doped Fe ions increased almost linearly with the concentration of K4(FeCN)6·3H2O increasing, eventually affecting the ethanol sensing performances of TiO2 thin films. It was found that the enhanced sensor signals obtained had an optimal concentration of Fe dopant (1.28at%), by which the maximal gas sensor signal to 1000 ppm ethanol was estimated to be 7.91 at 275°C. The response time was generally reduced by doped Fe ions, which could be ascribed to the increase of oxygen vacancies caused by Fe3+ substituting for Ti4+.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. G. Korotcenkov, Metal oxides for solid-state gas sensors: what determines our choice? Mater. Sci. Eng. B, 139(2007), No.1, p.1.

    Article  CAS  Google Scholar 

  2. L.L. Xing, C.H. Ma, Z.H. Chen, Y.J. Chen, and X.Y. Xue, High gas sensing performance of one-step-synthesized Pd-ZnO nanoflowers due to surface reactions and modifications, Nanotechnology, 22(2011), No.21, art. No.215501.

  3. A. Wisitsoraat, A. Tuantranont, E. Comini, G. Sberveglieri, and W. Wlodarski, Characterization of n-type and p-type semiconductor gas sensors based on NiOx doped TiO2 thin films, Thin Solid Films, 517(2009), No.8, p.2775.

    Article  CAS  Google Scholar 

  4. R.B. Zhang and F.S. Li, Electrical properties of titania films by hydrolysis of alkoxide titanium in micelles, J. Mater. Sci., 40(2005), No.18, p.4929.

    Article  CAS  Google Scholar 

  5. I.A. Al-Homoudi, J.S. Thakur, R. Naik, G.W. Auner, and G. Newaz, Anatase TiO2 films based CO gas sensor: film thickness, substrate and temperature effects, Appl. Surf. Sci., 253(2007), No.21, p.8607.

    Article  CAS  Google Scholar 

  6. A.Z. Sadek, J.G. Partridge, D.G. McCulloch, Y.X. Li, X.F. Yu, W. Wlodarski, and K. Kalantar-zadeh, Nanoporous TiO2 thin film based conductometric H2 sensor, Thin Solid Films, 518(2009), No.4, p.1294.

    Article  CAS  Google Scholar 

  7. G.N. Chaudhari, D.R. Bambole, A.B. Bodade, and P.R. Padole, Characterization of nanosized TiO2 based H2S gas sensor, J. Mater. Sci., 41(2006), No.15, p.4860.

    Article  CAS  Google Scholar 

  8. N. Bârsan and U. Weimar, Understanding the fundamental principles of metal oxide based gas sensors; the example of CO sensing with SnO2 sensors in the presence of humidity, J. Phys. Condens. Matter, 15(2003), No.20, p.813.

    Article  Google Scholar 

  9. Y.K. Jun, H.S. Kim, J.H. Lee, and S.H. Hong, CO sensing performance in micro-arc oxidized TiO2 films for air quality control, Sens. Actuators B, 120(2006), No.1, p.69.

    Article  Google Scholar 

  10. G. Korotcenkov, The role of morphology and crystallographic structure of metal oxides in response of conductometrictype gas sensors, Mater. Sci. Eng. R, 61(2008), p.1.

    Article  Google Scholar 

  11. W. Zeng and T.M. Liu, Hydrogen sensing characteristics and mechanism of nanosize TiO2 dope with metallic ions, Phys. B, 405(2010), No.2, p.564.

    Article  Google Scholar 

  12. A. Teleki, N. Bjelobrk, and S.E. Pratsinis, Flame-made Nb- and Cu-doped TiO2 sensors for CO and ethanol, Sens. Actuators B, 130(2008), No.1, p.449.

    Article  Google Scholar 

  13. C. Garzella, E. Comini, E. Bontempi, L.E. Depero, C. Frigeri, and G. Sberveglieri, Sol-gel TiO2 and W/TiO2 nanostructured thin films for control of drunken driving, Sens. Actuators B, 83(2002), No.1–3, p.230.

    Article  Google Scholar 

  14. I. Alessandri, E. Comini, E. Bontempi, G. Faglia, L.E. Depero, and G. Sberveglieri, Cr-inserted TiO2 thin films for chemical gas sensors, Sens. Actuators B, 128(2007), No.1, p.312.

    Article  Google Scholar 

  15. R.K. Sharma, M.C. Bhatnagar, and G.L. Sharma, Effect of Nb metal ion in TiO2 oxygen gas sensor, Appl. Surf. Sci., 92(1996), p.647.

    Article  CAS  Google Scholar 

  16. K. Zakrzewska, M. Radecka, and M. Rekas, Effect of Nb, Cr, Sn additions on gas sensing properties of TiO2 thin films, Thin Solid Films, 310(1997), No.1–2, p.161.

    Article  CAS  Google Scholar 

  17. L. Castañeda, A. Maldonado, and M. de la L. Olvera, Sensing properties of chemically sprayed TiO2 thin films using Ni, Ir, and Rh as catalysts, Sens. Actuators B, 133(2008), No.2, p.687.

    Article  Google Scholar 

  18. W.H. Zhang, W.D. Zhang, and J.F. Zhou, Solvent thermal synthesis and gas-sensing properties of Fe-doped ZnO, J. Mater. Sci., 45(2010), No.1, p.209.

    Article  CAS  Google Scholar 

  19. L. Wan, J.F. Li, J.Y. Feng, W. Sun, and Z.Q. Mao, Photocatalysts of Cr doped TiO2 film prepared by micro arc oxidation, Chin. J. Chem. Phys., 21(2008), No.5, p.487.

    Article  CAS  Google Scholar 

  20. J.F. Li, L. Wan, and J.Y. Feng, Study on the preparation of titania films for photocatalytic application by micro-arc oxidation, Sol. Energy Mater. Sol. Cells, 90(2006), No.15, p.2449.

    Article  CAS  Google Scholar 

  21. D.Q. Wei, Y. Zhou, and C.H. Yang, Characteristic and microstructure of the microarc oxidized TiO2-based film containing P before and after chemical- and heat treatment, Appl. Surf. Sci., 255(2009), No.18, p.7851.

    Article  CAS  Google Scholar 

  22. M.E. Franke, T.J. Koplin, and U. Simon, Metal and metal oxide nanoparticles in chemiresistors: Does the nanoscale matter? Small, 2(2006), No.1, p.36.

    Article  CAS  Google Scholar 

  23. Z.X. Wang and L. Liu, Synthesis and ethanol sensing properties of Fe-doped SnO2 nanofibers, Mater. Lett., 63(2009), No.11, p.917.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

    Fu-jian Ren, Xiao-bai Yu, Yun-han Ling & Jia-you Feng

Authors
  1. Fu-jian Ren
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Xiao-bai Yu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Yun-han Ling
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Jia-you Feng
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Fu-jian Ren.

Additional information

This work was financially supported by the National Basic Research Priorities Program of China (No.2007CB936601) and the National Natural Science Foundation of China (Nos.10876017 and 91023037).

Rights and permissions

Reprints and permissions

About this article

Cite this article

Ren, Fj., Yu, Xb., Ling, Yh. et al. Micro-arc oxidization fabrication and ethanol sensing performance of Fe-doped TiO2 thin films. Int J Miner Metall Mater 19, 461–466 (2012). https://doi.org/10.1007/s12613-012-0580-8

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12613-012-0580-8

Keywords

Search

Navigation