Sensing of acetone by Al-doped ZnO

Ran Yoo; Andreas T. Güntner; Yunji Park; Hyun Jun Rim; Hyun Sook Lee; Wooyoung Lee

doi:10.1016/j.snb.2018.12.001

Sensing of acetone by Al-doped ZnO

Ran Yoo, Andreas T. Güntner, Yunji Park, Hyun Jun Rim, Hyun Sook Lee, Wooyoung Lee

Department of Materials Science and Engineering

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

69 Citations (Scopus)

Abstract

The development of chemoresistive gas sensors for environmental and industrial air monitoring as well as medical breath analysis is investigated. Flame-made ZnO nanoparticles (NPs) doped with 1 at% Aluminum exhibited higher sensing performance (response 245, response time ∼ 3 s, and sensitivity 23 ppm⁻¹) than pure ZnO and those made by a hydrothermal method (HT) (56, ∼ 12 s, and 4 ppm⁻¹) for detection of 10 ppm acetone. Furthermore, their sensing response of ∼10 to 0.1 ppm of acetone at 90% RH is superior to other metal oxide sensors and they feature good acetone selectivity to other compounds (including NH₃, isoprene and CO). Characterization by N₂ adsorption, X-ray photoelectron and UV–vis spectroscopies reveals that the improved sensing performance of flame-made Al-doped ZnO NPs is associated primarily to a higher density of oxygen vacancies than pure ZnO and all HT-made NPs. This leads to a greater number of adsorbed oxygen ions on the surfaces of Al-doped ZnO NPs, which can react with acetone molecules.

Original language	English
Pages (from-to)	107-115
Number of pages	9
Journal	Sensors and Actuators, B: Chemical
Volume	283
DOIs	https://doi.org/10.1016/j.snb.2018.12.001
Publication status	Published - 2019 Mar 15

Bibliographical note

Funding Information:
This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), and it was funded by the Ministry of Science, ICT & Future Planning ( NFR-2017M3A9F1052297 ). ATG and SEP gratefully acknowledge funding by the Swiss National Science Foundation (grant # 200021_159763/1 ).

Publisher Copyright:
© 2018 Elsevier B.V.

All Science Journal Classification (ASJC) codes

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

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10.1016/j.snb.2018.12.001

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title = "Sensing of acetone by Al-doped ZnO",

abstract = "The development of chemoresistive gas sensors for environmental and industrial air monitoring as well as medical breath analysis is investigated. Flame-made ZnO nanoparticles (NPs) doped with 1 at% Aluminum exhibited higher sensing performance (response 245, response time ∼ 3 s, and sensitivity 23 ppm−1) than pure ZnO and those made by a hydrothermal method (HT) (56, ∼ 12 s, and 4 ppm−1) for detection of 10 ppm acetone. Furthermore, their sensing response of ∼10 to 0.1 ppm of acetone at 90% RH is superior to other metal oxide sensors and they feature good acetone selectivity to other compounds (including NH3, isoprene and CO). Characterization by N2 adsorption, X-ray photoelectron and UV–vis spectroscopies reveals that the improved sensing performance of flame-made Al-doped ZnO NPs is associated primarily to a higher density of oxygen vacancies than pure ZnO and all HT-made NPs. This leads to a greater number of adsorbed oxygen ions on the surfaces of Al-doped ZnO NPs, which can react with acetone molecules.",

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note = "Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), and it was funded by the Ministry of Science, ICT & Future Planning ( NFR-2017M3A9F1052297 ). ATG and SEP gratefully acknowledge funding by the Swiss National Science Foundation (grant # 200021_159763/1 ). Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

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AU - Yoo, Ran

AU - Güntner, Andreas T.

AU - Park, Yunji

AU - Rim, Hyun Jun

AU - Lee, Hyun Sook

AU - Lee, Wooyoung

N1 - Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), and it was funded by the Ministry of Science, ICT & Future Planning ( NFR-2017M3A9F1052297 ). ATG and SEP gratefully acknowledge funding by the Swiss National Science Foundation (grant # 200021_159763/1 ). Publisher Copyright: © 2018 Elsevier B.V.

PY - 2019/3/15

Y1 - 2019/3/15

N2 - The development of chemoresistive gas sensors for environmental and industrial air monitoring as well as medical breath analysis is investigated. Flame-made ZnO nanoparticles (NPs) doped with 1 at% Aluminum exhibited higher sensing performance (response 245, response time ∼ 3 s, and sensitivity 23 ppm−1) than pure ZnO and those made by a hydrothermal method (HT) (56, ∼ 12 s, and 4 ppm−1) for detection of 10 ppm acetone. Furthermore, their sensing response of ∼10 to 0.1 ppm of acetone at 90% RH is superior to other metal oxide sensors and they feature good acetone selectivity to other compounds (including NH3, isoprene and CO). Characterization by N2 adsorption, X-ray photoelectron and UV–vis spectroscopies reveals that the improved sensing performance of flame-made Al-doped ZnO NPs is associated primarily to a higher density of oxygen vacancies than pure ZnO and all HT-made NPs. This leads to a greater number of adsorbed oxygen ions on the surfaces of Al-doped ZnO NPs, which can react with acetone molecules.

AB - The development of chemoresistive gas sensors for environmental and industrial air monitoring as well as medical breath analysis is investigated. Flame-made ZnO nanoparticles (NPs) doped with 1 at% Aluminum exhibited higher sensing performance (response 245, response time ∼ 3 s, and sensitivity 23 ppm−1) than pure ZnO and those made by a hydrothermal method (HT) (56, ∼ 12 s, and 4 ppm−1) for detection of 10 ppm acetone. Furthermore, their sensing response of ∼10 to 0.1 ppm of acetone at 90% RH is superior to other metal oxide sensors and they feature good acetone selectivity to other compounds (including NH3, isoprene and CO). Characterization by N2 adsorption, X-ray photoelectron and UV–vis spectroscopies reveals that the improved sensing performance of flame-made Al-doped ZnO NPs is associated primarily to a higher density of oxygen vacancies than pure ZnO and all HT-made NPs. This leads to a greater number of adsorbed oxygen ions on the surfaces of Al-doped ZnO NPs, which can react with acetone molecules.

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Sensing of acetone by Al-doped ZnO

Abstract

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All Science Journal Classification (ASJC) codes

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