Highly-sensitive, fast hydrogen sensing employing Pt-coated TiO sub(2) nanotube arrays

Highly ordered TiO sub(2) nanotube arrays were fabricated by anodization in an ethylene glycol solution containing NH sub(4)F. A pair of platinum electrodes was deposited on the surface of the nanotube layer to fabricate a Pt/TiO sub(2) nanotube arrays hydrogen sensor. The subject sensors exhibited...

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Published inFunctional materials letters Vol. 7; no. 3; pp. 1450021 - 1-1452001-4
Main Authors Chen, Kansong, Xie, Kun, Feng, Xinran, Tian, Han, Hu, Rui, Li, Yang, Gu, Haoshuang
Format Journal Article
LanguageEnglish
Published 01.06.2014
Subjects
Arrays
Deposition
Electrodes
Ethylene glycol
Nanostructure
Platinum
Sensors
Titanium dioxide
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ISSN1793-6047
1793-7213
DOI10.1142/S1793604714500210

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Summary:Highly ordered TiO sub(2) nanotube arrays were fabricated by anodization in an ethylene glycol solution containing NH sub(4)F. A pair of platinum electrodes was deposited on the surface of the nanotube layer to fabricate a Pt/TiO sub(2) nanotube arrays hydrogen sensor. The subject sensors exhibited a seven order of magnitude change in resistance with a response time of 13 s at room temperature upon exposure to 2000 ppm (parts per million) hydrogen. We investigated the hydrogen response of the Pt/TiO sub(2) sensors as a function of the length of the nanotubes and compared their activity with that of a reference film.
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ISSN:1793-6047
1793-7213
DOI:10.1142/S1793604714500210