Hydrogen sensing performance of TiO2 nanotubes at room temperature

J. Y. Moon, I. Tuokko, A. Suominen, A. Tuominen, D. S. Oh, B. K. Park, H. Kim

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


We report the hydrogen sensing properties of a sensor using TiO2 nanotube arrays. The TiO2 nanotube arrays were fabricated by anodization on titanium foil, in an electrolyte containing 0.5 wt% hydrofluoric acid mixed with water, the electric potential being 15V. TiO2 nanotube arrays were annealed at 600 Celsius for 1 h. The sensors were equipped with platinum electrodes. These two were connected with a metal wire using silver paste. The measurements of the sensor's electrical resistance were performed in NTP. The hydrogen sensor using TiO2 nanotube arrays shows a linear sensitivity with various hydrogen concentrations. After repeating exposure to hydrogen at room temperature, the sensor's resistance indicated a stable recovery to its initial resistance. The reproducibility of this exam is reliable.

Original languageEnglish
Title of host publicationBEC 2010 - 2010 12th Biennial Baltic Electronics Conference, Proceedings of the 12th Biennial Baltic Electronics Conference
Number of pages4
Publication statusPublished - 1 Dec 2010
MoE publication typeA4 Article in a conference publication
Event2010 12th Biennial Baltic Electronics Conference, BEC 2010 - Tallinn, Estonia
Duration: 4 Oct 20106 Oct 2010


Conference2010 12th Biennial Baltic Electronics Conference, BEC 2010


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