Enhanced gas sensing characteristics of Au-Loaded TiO2 Nanotube Sensors

Min Hyun Seo; Masayoshi Yuasa; Tetsuya Kida; Jeung Soo Huh; Noboru Yamazoe; Kengo Shimanoe

doi:10.1166/sl.2011.1412

Enhanced gas sensing characteristics of Au-Loaded TiO₂ Nanotube Sensors

Min Hyun Seo, Masayoshi Yuasa, Tetsuya Kida, Jeung Soo Huh, Noboru Yamazoe, Kengo Shimanoe

Functional Materials Science

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

10 Citations (Scopus)

Abstract

The loading of noble metals was carried out to enhance the gas sensing characteristics of TiO₂ nanotube-based sensors. Using a photochemical deposition method, Au nanoparticles were successfully deposited on TiO ₂ nanotubes prepared by a hydrothermal method in a highly-dispersed state. The sensor device using a porous film composed of the Au-loaded (0.5 wt%) TiO₂ nanotubes exhibited improved sensor responses to 10-50 ppm toluene in air at 500 °C. The sensor response was about two times higher than that of a sensor using commercial TiO₂ nanoparticles (degussa P-25). The results demonstrate that the Au loading is a very efficient method for improving the sensing characteristics of TiO₂ nanotube-based sensors operative at high temperatures.

Original language	English
Pages (from-to)	26-30
Number of pages	5
Journal	Sensor Letters
Volume	9
Issue number	1
DOIs	https://doi.org/10.1166/sl.2011.1412
Publication status	Published - Jan 1 2011

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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abstract = "The loading of noble metals was carried out to enhance the gas sensing characteristics of TiO2 nanotube-based sensors. Using a photochemical deposition method, Au nanoparticles were successfully deposited on TiO 2 nanotubes prepared by a hydrothermal method in a highly-dispersed state. The sensor device using a porous film composed of the Au-loaded (0.5 wt%) TiO2 nanotubes exhibited improved sensor responses to 10-50 ppm toluene in air at 500 °C. The sensor response was about two times higher than that of a sensor using commercial TiO2 nanoparticles (degussa P-25). The results demonstrate that the Au loading is a very efficient method for improving the sensing characteristics of TiO2 nanotube-based sensors operative at high temperatures.",

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AU - Yamazoe, Noboru

AU - Shimanoe, Kengo

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Enhanced gas sensing characteristics of Au-Loaded TiO₂ Nanotube Sensors

Abstract

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