Abstract
We report the effects of various dopants (Al, Co, and Cu) on the acetone-sensing properties of ZnO nanoparticles (NPs) for breath-analyzer applications. Among the different sensing materials, the Al-doped ZnO NPs exhibited the highest sensitivity toward 1 ppm acetone, with a maximum response of 11.8 at 500 °C. This improved sensing performance was related to deep donor-level defects caused by double oxygen vacancies in the Al-doped ZnO NPs, as confirmed by photoluminescence spectra. Thus, Al was a more effective dopant than Cu and Co for enhancing the sensing properties of ZnO NPs for the detection of acetone. We achieved selective detection of 0.5 ppm acetone in air using the Al-doped ZnO NPs incorporated into a miniaturized gas chromatograph (GC). The results indicate that the miniaturized GC integrated with the Al-doped ZnO NPs can be utilized for an acetone breath analyzer.
| Original language | English |
|---|---|
| Pages (from-to) | 135-144 |
| Number of pages | 10 |
| Journal | Journal of Alloys and Compounds |
| Volume | 803 |
| DOIs | |
| Publication status | Published - 2019 Sep 30 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
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Acetone-sensing properties of doped ZnO nanoparticles for breath-analyzer applications. / Yoo, Ran; Park, Yunji; Jung, Hwaebong; Rim, Hyun Jun; Cho, Sungmee; Lee, Hyun Sook; Lee, Wooyoung.
In: Journal of Alloys and Compounds, Vol. 803, 30.09.2019, p. 135-144.Research output: Contribution to journal › Article
TY - JOUR
T1 - Acetone-sensing properties of doped ZnO nanoparticles for breath-analyzer applications
AU - Yoo, Ran
AU - Park, Yunji
AU - Jung, Hwaebong
AU - Rim, Hyun Jun
AU - Cho, Sungmee
AU - Lee, Hyun Sook
AU - Lee, Wooyoung
PY - 2019/9/30
Y1 - 2019/9/30
N2 - We report the effects of various dopants (Al, Co, and Cu) on the acetone-sensing properties of ZnO nanoparticles (NPs) for breath-analyzer applications. Among the different sensing materials, the Al-doped ZnO NPs exhibited the highest sensitivity toward 1 ppm acetone, with a maximum response of 11.8 at 500 °C. This improved sensing performance was related to deep donor-level defects caused by double oxygen vacancies in the Al-doped ZnO NPs, as confirmed by photoluminescence spectra. Thus, Al was a more effective dopant than Cu and Co for enhancing the sensing properties of ZnO NPs for the detection of acetone. We achieved selective detection of 0.5 ppm acetone in air using the Al-doped ZnO NPs incorporated into a miniaturized gas chromatograph (GC). The results indicate that the miniaturized GC integrated with the Al-doped ZnO NPs can be utilized for an acetone breath analyzer.
AB - We report the effects of various dopants (Al, Co, and Cu) on the acetone-sensing properties of ZnO nanoparticles (NPs) for breath-analyzer applications. Among the different sensing materials, the Al-doped ZnO NPs exhibited the highest sensitivity toward 1 ppm acetone, with a maximum response of 11.8 at 500 °C. This improved sensing performance was related to deep donor-level defects caused by double oxygen vacancies in the Al-doped ZnO NPs, as confirmed by photoluminescence spectra. Thus, Al was a more effective dopant than Cu and Co for enhancing the sensing properties of ZnO NPs for the detection of acetone. We achieved selective detection of 0.5 ppm acetone in air using the Al-doped ZnO NPs incorporated into a miniaturized gas chromatograph (GC). The results indicate that the miniaturized GC integrated with the Al-doped ZnO NPs can be utilized for an acetone breath analyzer.
UR - http://www.scopus.com/inward/record.url?scp=85067846739&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067846739&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2019.06.254
DO - 10.1016/j.jallcom.2019.06.254
M3 - Article
VL - 803
SP - 135
EP - 144
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -