Vertically ordered hematite nanotube array as an ultrasensitive and rapid response acetone sensor

Do Hong Kim; Young Seok Shim; Jong Myeong Jeon; Hu Young Jeong; Sung Soo Park; Young Woon Kim; Jin Sang Kim; Jong Heun Lee; Ho Won Jang

doi:10.1021/am504156w

Vertically ordered hematite nanotube array as an ultrasensitive and rapid response acetone sensor

Do Hong Kim, Young Seok Shim, Jong Myeong Jeon, Hu Young Jeong, Sung Soo Park, Young Woon Kim, Jin Sang Kim, Jong Heun Lee, Ho Won Jang

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

73 Citations (Scopus)

Abstract

Vertically ordered nanotube array is a desirable configuration to improve gas sensing properties of the hematite which is the most abundant and cheapest metal oxide semiconductor on earth but has low and sluggish chemiresistive responses. We have synthesized a vertically aligned, highly ordered hematite nanotube array directly on a patterned SiO₂/Si substrate and then it used as a gas sensor without additional processing. The nanotube array sensor shows unprecedentedly ultrahigh and selective responses to acetone with detection limits down to a few parts per billion and response time shorter than 3 s.

Original language	English
Pages (from-to)	14779-14784
Number of pages	6
Journal	ACS Applied Materials and Interfaces
Volume	6
Issue number	17
DOIs	https://doi.org/10.1021/am504156w
Publication status	Published - 2014 Sept 10

Keywords

acetone sensor
earth abundant
hematite
nanotube array
ultrasensitive

ASJC Scopus subject areas

Materials Science(all)

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10.1021/am504156w

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abstract = "Vertically ordered nanotube array is a desirable configuration to improve gas sensing properties of the hematite which is the most abundant and cheapest metal oxide semiconductor on earth but has low and sluggish chemiresistive responses. We have synthesized a vertically aligned, highly ordered hematite nanotube array directly on a patterned SiO2/Si substrate and then it used as a gas sensor without additional processing. The nanotube array sensor shows unprecedentedly ultrahigh and selective responses to acetone with detection limits down to a few parts per billion and response time shorter than 3 s.",

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AU - Shim, Young Seok

AU - Jeon, Jong Myeong

AU - Jeong, Hu Young

AU - Park, Sung Soo

AU - Kim, Young Woon

AU - Kim, Jin Sang

AU - Lee, Jong Heun

AU - Jang, Ho Won

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AB - Vertically ordered nanotube array is a desirable configuration to improve gas sensing properties of the hematite which is the most abundant and cheapest metal oxide semiconductor on earth but has low and sluggish chemiresistive responses. We have synthesized a vertically aligned, highly ordered hematite nanotube array directly on a patterned SiO2/Si substrate and then it used as a gas sensor without additional processing. The nanotube array sensor shows unprecedentedly ultrahigh and selective responses to acetone with detection limits down to a few parts per billion and response time shorter than 3 s.

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KW - nanotube array

KW - ultrasensitive

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Vertically ordered hematite nanotube array as an ultrasensitive and rapid response acetone sensor

Abstract

Keywords

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