TiO2 nanotube-based gas sensor at room temperature

Authors

  • Marleane Rovi Ferrer National Institute of Physics, University of the Philippines Diliman
  • Julie Ann Lebitania National Institute of Physics, University of the Philippines Diliman
  • Laureen Ida Ballesteros National Institute of Physics, University of the Philippines Diliman
  • Christopher Jude Vergara National Institute of Physics, University of the Philippines Diliman

Abstract

Titanium dioxide nanotubes were fabricated via anodization process. The surface morphology of the nanotubes was observed using Field Emission Scanning Electron Microscopy. The alcohol-sensing ability at room temperature of the fabricated TiO2 nanotubes was studied using methanol, ethanol and 2-propanol as analyte gases. The response was determined by measuring the electrical resistance of the material. Resistance of TiO2 decreased in the presence of reducing alcohol vapors. Fastest response was observed for methanol while slowest for 2-propanol. Though the sensor showed small changes in resistance values and the response was relatively slow, which can be accounted to the low operating temperature, it was able to respond in the presence of the analyte gases and recover after testing at room temperature.

SPP 2012 Conference Proceedings cover

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Published

2012-10-22

Issue

2012: Proceedings of the 30th Samahang Pisika ng Pilipinas Physics Congress

Section

Instrumentation Physics

License

By submitting their manuscript to the Samahang Pisika ng Pilipinas (SPP) for consideration, the Authors warrant that their work is original, does not infringe on existing copyrights, and is not under active consideration for publication elsewhere.
Upon acceptance of their manuscript, the Authors further agree to grant SPP the non-exclusive, worldwide, and royalty-free rights to record, edit, copy, reproduce, publish, distribute, and use all or part of the manuscript for any purpose, in any media now existing or developed in the future, either individually or as part of a collection.
All other associated economic and moral rights as granted by the Intellectual Property Code of the Philippines are maintained by the Authors.

How to Cite

[1]
“TiO2 nanotube-based gas sensor at room temperature”, Proc. SPP, vol. 30, no. 1, pp. SPP2012–4A, Oct. 2012, Accessed: Mar. 31, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP2012-4A-1