Au decoration of vertical hematite nanotube arrays for further selective detection of acetone in exhaled breath

Do Hong Kim; Tae Hoon Kim; Woonbae Sohn; Jun Min Suh; Young Seok Shim; Ki Chang Kwon; Kootak Hong; Seokhoon Choi; Hyung Gi Byun; Jong Heun Lee; Ho Won Jang

doi:10.1016/j.snb.2018.07.159

Au decoration of vertical hematite nanotube arrays for further selective detection of acetone in exhaled breath

Do Hong Kim
, Tae Hoon Kim
, Woonbae Sohn
, Jun Min Suh
, Young Seok Shim
, Ki Chang Kwon
, Kootak Hong
, Seokhoon Choi
, Hyung Gi Byun
, Jong Heun Lee^*
, Ho Won Jang

^*Corresponding author for this work

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

42 Citations (Scopus)

Abstract

Vertically ordered hematite nanotubes decorated with Au nanoparticles are synthesized by a facile electrochemical anodization method and self-agglomeration of Au films. Au decoration significantly enhances the response of hematite nanotubes to acetone at 350 °C and the response to acetone is 2.4 times higher than the response to ethanol, the counterpart target gas. The Au nanoparticles decorated hematite nanotubes exhibit unprecedentedly high and selective responses to acetone at 350 °C with 50% relative humidity condition (calibrated at room temperature, 25 °C). The enhanced gas sensing properties in a humid condition were attributed to the spillover effect by Au nanoparticles and high porosity of hematite nanotubes with a large surface-to-volume ratio. These results indicate that Au nanoparticles decorated hematite nanotubes are promising for use in high quality sensor materials for breath analyzers to diagnose diabetes mellitus.

Original language	English
Pages (from-to)	587-594
Number of pages	8
Journal	Sensors and Actuators, B: Chemical
Volume	274
DOIs	https://doi.org/10.1016/j.snb.2018.07.159
Publication status	Published - 2018 Nov 20

Bibliographical note

Funding Information:
This work was supported by a Korea University Grant . H. W. Jang acknowledges the Basic Science Research Program ( 2017R1A2B3009135 ) and the Future Material Discovery Program ( 2016M3D1A1027666 ) through the National Research Foundation (NRF) of Korea. The work of J. –H. Lee was supported by a grant from NRF, which was funded by the Korean government (Ministry of Education, Science, and Technology (MEST) , Grant No. 2016R1A2A1A05005331 ).

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Acetone sensor
Anodization
Au catalyst
Diabetes mellitus
Hematite nanotubes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.snb.2018.07.159

Cite this

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title = "Au decoration of vertical hematite nanotube arrays for further selective detection of acetone in exhaled breath",

abstract = "Vertically ordered hematite nanotubes decorated with Au nanoparticles are synthesized by a facile electrochemical anodization method and self-agglomeration of Au films. Au decoration significantly enhances the response of hematite nanotubes to acetone at 350 °C and the response to acetone is 2.4 times higher than the response to ethanol, the counterpart target gas. The Au nanoparticles decorated hematite nanotubes exhibit unprecedentedly high and selective responses to acetone at 350 °C with 50\% relative humidity condition (calibrated at room temperature, 25 °C). The enhanced gas sensing properties in a humid condition were attributed to the spillover effect by Au nanoparticles and high porosity of hematite nanotubes with a large surface-to-volume ratio. These results indicate that Au nanoparticles decorated hematite nanotubes are promising for use in high quality sensor materials for breath analyzers to diagnose diabetes mellitus.",

keywords = "Acetone sensor, Anodization, Au catalyst, Diabetes mellitus, Hematite nanotubes",

author = "Kim, \{Do Hong\} and Kim, \{Tae Hoon\} and Woonbae Sohn and Suh, \{Jun Min\} and Shim, \{Young Seok\} and Kwon, \{Ki Chang\} and Kootak Hong and Seokhoon Choi and Byun, \{Hyung Gi\} and Lee, \{Jong Heun\} and Jang, \{Ho Won\}",

note = "Funding Information: This work was supported by a Korea University Grant . H. W. Jang acknowledges the Basic Science Research Program ( 2017R1A2B3009135 ) and the Future Material Discovery Program ( 2016M3D1A1027666 ) through the National Research Foundation (NRF) of Korea. The work of J. –H. Lee was supported by a grant from NRF, which was funded by the Korean government (Ministry of Education, Science, and Technology (MEST) , Grant No. 2016R1A2A1A05005331 ). Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

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doi = "10.1016/j.snb.2018.07.159",

language = "English",

volume = "274",

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journal = "Sensors and Actuators, B: Chemical",

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T1 - Au decoration of vertical hematite nanotube arrays for further selective detection of acetone in exhaled breath

AU - Kim, Do Hong

AU - Kim, Tae Hoon

AU - Sohn, Woonbae

AU - Suh, Jun Min

AU - Shim, Young Seok

AU - Kwon, Ki Chang

AU - Hong, Kootak

AU - Choi, Seokhoon

AU - Byun, Hyung Gi

AU - Lee, Jong Heun

AU - Jang, Ho Won

N1 - Funding Information: This work was supported by a Korea University Grant . H. W. Jang acknowledges the Basic Science Research Program ( 2017R1A2B3009135 ) and the Future Material Discovery Program ( 2016M3D1A1027666 ) through the National Research Foundation (NRF) of Korea. The work of J. –H. Lee was supported by a grant from NRF, which was funded by the Korean government (Ministry of Education, Science, and Technology (MEST) , Grant No. 2016R1A2A1A05005331 ). Publisher Copyright: © 2018 Elsevier B.V.

PY - 2018/11/20

Y1 - 2018/11/20

N2 - Vertically ordered hematite nanotubes decorated with Au nanoparticles are synthesized by a facile electrochemical anodization method and self-agglomeration of Au films. Au decoration significantly enhances the response of hematite nanotubes to acetone at 350 °C and the response to acetone is 2.4 times higher than the response to ethanol, the counterpart target gas. The Au nanoparticles decorated hematite nanotubes exhibit unprecedentedly high and selective responses to acetone at 350 °C with 50% relative humidity condition (calibrated at room temperature, 25 °C). The enhanced gas sensing properties in a humid condition were attributed to the spillover effect by Au nanoparticles and high porosity of hematite nanotubes with a large surface-to-volume ratio. These results indicate that Au nanoparticles decorated hematite nanotubes are promising for use in high quality sensor materials for breath analyzers to diagnose diabetes mellitus.

AB - Vertically ordered hematite nanotubes decorated with Au nanoparticles are synthesized by a facile electrochemical anodization method and self-agglomeration of Au films. Au decoration significantly enhances the response of hematite nanotubes to acetone at 350 °C and the response to acetone is 2.4 times higher than the response to ethanol, the counterpart target gas. The Au nanoparticles decorated hematite nanotubes exhibit unprecedentedly high and selective responses to acetone at 350 °C with 50% relative humidity condition (calibrated at room temperature, 25 °C). The enhanced gas sensing properties in a humid condition were attributed to the spillover effect by Au nanoparticles and high porosity of hematite nanotubes with a large surface-to-volume ratio. These results indicate that Au nanoparticles decorated hematite nanotubes are promising for use in high quality sensor materials for breath analyzers to diagnose diabetes mellitus.

KW - Acetone sensor

KW - Anodization

KW - Au catalyst

KW - Diabetes mellitus

KW - Hematite nanotubes

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M3 - Article

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JO - Sensors and Actuators, B: Chemical

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ER -

Au decoration of vertical hematite nanotube arrays for further selective detection of acetone in exhaled breath

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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