抄録
For monitoring of air quality and medical diagnosis, metal-oxide-semiconductor particles with high sensitivity to detect small amount of gases are desirable. Herein, we report the fabrication of ZnO pyramid-shaped particles with remarkably high sensitivity to ethanol gas. The ZnO pyramid-shaped particles were synthesized solvothermally under agitation from the solution of zinc acetate anhydride, hexamethylenetetramine, ethylene glycol, and water. Gas sensing response was evaluated as the ratio of electrical resistance of the ZnO particulate layer in air to that in ethanol. The agitation during the solvothermal process resulted in dispersion of the pyramid-shaped particles rather than spherical aggregates. TEM studies revealed that the base of the pyramid-shaped particles is the (0001) plane and that the six side surfaces are the {101 1} plane. The highest gas sensing response value to 50 ppm ethanol gas was about 10※000, which is remarkably higher than that of previously reported ZnO particles. The influence of the crystal facets and the polarity is discussed.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 7353-7360 |
| ページ数 | 8 |
| ジャーナル | Journal of Physical Chemistry C |
| 巻 | 122 |
| 発行部数 | 13 |
| DOI | |
| 出版物ステータス | 出版済み - 4 5 2018 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
これを引用
Highly Sensitive Ethanol Gas Sensor Using Pyramid-Shaped ZnO Particles with (0001) Basal Plane. / Saito, Noriko; Watanabe, Ken; Haneda, Hajime; Sakaguchi, Isao; Shimanoe, Kengo.
：: Journal of Physical Chemistry C, 巻 122, 番号 13, 05.04.2018, p. 7353-7360.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Highly Sensitive Ethanol Gas Sensor Using Pyramid-Shaped ZnO Particles with (0001) Basal Plane
AU - Saito, Noriko
AU - Watanabe, Ken
AU - Haneda, Hajime
AU - Sakaguchi, Isao
AU - Shimanoe, Kengo
PY - 2018/4/5
Y1 - 2018/4/5
N2 - For monitoring of air quality and medical diagnosis, metal-oxide-semiconductor particles with high sensitivity to detect small amount of gases are desirable. Herein, we report the fabrication of ZnO pyramid-shaped particles with remarkably high sensitivity to ethanol gas. The ZnO pyramid-shaped particles were synthesized solvothermally under agitation from the solution of zinc acetate anhydride, hexamethylenetetramine, ethylene glycol, and water. Gas sensing response was evaluated as the ratio of electrical resistance of the ZnO particulate layer in air to that in ethanol. The agitation during the solvothermal process resulted in dispersion of the pyramid-shaped particles rather than spherical aggregates. TEM studies revealed that the base of the pyramid-shaped particles is the (0001) plane and that the six side surfaces are the {101 1} plane. The highest gas sensing response value to 50 ppm ethanol gas was about 10※000, which is remarkably higher than that of previously reported ZnO particles. The influence of the crystal facets and the polarity is discussed.
AB - For monitoring of air quality and medical diagnosis, metal-oxide-semiconductor particles with high sensitivity to detect small amount of gases are desirable. Herein, we report the fabrication of ZnO pyramid-shaped particles with remarkably high sensitivity to ethanol gas. The ZnO pyramid-shaped particles were synthesized solvothermally under agitation from the solution of zinc acetate anhydride, hexamethylenetetramine, ethylene glycol, and water. Gas sensing response was evaluated as the ratio of electrical resistance of the ZnO particulate layer in air to that in ethanol. The agitation during the solvothermal process resulted in dispersion of the pyramid-shaped particles rather than spherical aggregates. TEM studies revealed that the base of the pyramid-shaped particles is the (0001) plane and that the six side surfaces are the {101 1} plane. The highest gas sensing response value to 50 ppm ethanol gas was about 10※000, which is remarkably higher than that of previously reported ZnO particles. The influence of the crystal facets and the polarity is discussed.
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U2 - 10.1021/acs.jpcc.8b01936
DO - 10.1021/acs.jpcc.8b01936
M3 - Article
VL - 122
SP - 7353
EP - 7360
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 13
ER -