Hydrogen gas sensor using Pt- and Pd-added anodic TiO2 nanotube films

Sungwook Joo; Izumi Muto; Nobuyoshi Hara

doi:10.1149/1.3374643

Hydrogen gas sensor using Pt- and Pd-added anodic TiO₂ nanotube films

Sungwook Joo, Izumi Muto, Nobuyoshi Hara

ENG - Materials Science

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

TiO₂ nanotube films were formed on pure Ti, Ti-Pt, and Ti-Pd thin films by anodization in a mixture of glycerol and water (1:1 volume ratio) containing 0.5 wt % NH₄ F and were applied as a resistance-type hydrogen gas sensor. A transmission electron microscopy analysis of the TiO ₂ nanotube films revealed that the nanosized particles of Pt and Pd were dispersed in the wall of the nanotube. These dispersed Pt or Pd particles effectively improved the performance of the hydrogen gas sensor perhaps due to the acceleration of hydrogen chemisorption on the wall of the nanotube. Pt- and Pd-added TiO₂ nanotube sensors showed a two-order decrease in resistance upon exposure to 1000 ppm H₂ at 290°C and had little or no response to 1000 ppm CH₄, 1000 ppm CO, and 1 ppm SO ₂.

Original language	English
Pages (from-to)	J221-J226
Journal	Journal of the Electrochemical Society
Volume	157
Issue number	6
DOIs	https://doi.org/10.1149/1.3374643
Publication status	Published - 2010

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abstract = "TiO2 nanotube films were formed on pure Ti, Ti-Pt, and Ti-Pd thin films by anodization in a mixture of glycerol and water (1:1 volume ratio) containing 0.5 wt % NH4 F and were applied as a resistance-type hydrogen gas sensor. A transmission electron microscopy analysis of the TiO 2 nanotube films revealed that the nanosized particles of Pt and Pd were dispersed in the wall of the nanotube. These dispersed Pt or Pd particles effectively improved the performance of the hydrogen gas sensor perhaps due to the acceleration of hydrogen chemisorption on the wall of the nanotube. Pt- and Pd-added TiO2 nanotube sensors showed a two-order decrease in resistance upon exposure to 1000 ppm H2 at 290°C and had little or no response to 1000 ppm CH4, 1000 ppm CO, and 1 ppm SO 2.",

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AU - Joo, Sungwook

AU - Muto, Izumi

AU - Hara, Nobuyoshi

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N2 - TiO2 nanotube films were formed on pure Ti, Ti-Pt, and Ti-Pd thin films by anodization in a mixture of glycerol and water (1:1 volume ratio) containing 0.5 wt % NH4 F and were applied as a resistance-type hydrogen gas sensor. A transmission electron microscopy analysis of the TiO 2 nanotube films revealed that the nanosized particles of Pt and Pd were dispersed in the wall of the nanotube. These dispersed Pt or Pd particles effectively improved the performance of the hydrogen gas sensor perhaps due to the acceleration of hydrogen chemisorption on the wall of the nanotube. Pt- and Pd-added TiO2 nanotube sensors showed a two-order decrease in resistance upon exposure to 1000 ppm H2 at 290°C and had little or no response to 1000 ppm CH4, 1000 ppm CO, and 1 ppm SO 2.

AB - TiO2 nanotube films were formed on pure Ti, Ti-Pt, and Ti-Pd thin films by anodization in a mixture of glycerol and water (1:1 volume ratio) containing 0.5 wt % NH4 F and were applied as a resistance-type hydrogen gas sensor. A transmission electron microscopy analysis of the TiO 2 nanotube films revealed that the nanosized particles of Pt and Pd were dispersed in the wall of the nanotube. These dispersed Pt or Pd particles effectively improved the performance of the hydrogen gas sensor perhaps due to the acceleration of hydrogen chemisorption on the wall of the nanotube. Pt- and Pd-added TiO2 nanotube sensors showed a two-order decrease in resistance upon exposure to 1000 ppm H2 at 290°C and had little or no response to 1000 ppm CH4, 1000 ppm CO, and 1 ppm SO 2.

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Hydrogen gas sensor using Pt- and Pd-added anodic TiO₂ nanotube films

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