Ultrahigh Sensitivity and Excellent Selectivity of Al<sub>2</sub>O<sub>3</sub>-doped ZnO Micro-flowers to Acetone

Ultrahigh Sensitivity and Excellent Selectivity of Al<sub>2</sub>O<sub>3</sub>-doped ZnO Micro-flowers to Acetone

Pore spaced pure ZnO and Al<sub>2</sub>O<sub>3</sub>-doped ZnO(Al<sub>2</sub>O<sub>3</sub>-ZnO) micro-flowers were successfully synthesized by hydrothermal method. The microstructure, morphology and components were characterized by X-ray diffraction (X...

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Main Authors: LIU Chang-bai, LIU Li, LIU Xing-yi
Format: Article
Language:zho
Published: Journal of Materials Engineering 2017-02-01
Series:Journal of Materials Engineering
Subjects:
hydrothermal method
acetone
Al<sub>2</sub>O<sub>3</sub>-ZnO micro-flower
gas sensor
Online Access:http://jme.biam.ac.cn/CN/Y2017/V45/I2/12
id doaj-3f198a2eb3964cd69d9f16aad30b8449
record_format Article
spelling doaj-3f198a2eb3964cd69d9f16aad30b84492020-11-24T23:24:09ZzhoJournal of Materials EngineeringJournal of Materials Engineering1001-43811001-43812017-02-01452121610.11868/j.issn.1001-4381.2015.000417201702000417Ultrahigh Sensitivity and Excellent Selectivity of Al<sub>2</sub>O<sub>3</sub>-doped ZnO Micro-flowers to AcetoneLIU Chang-bai0LIU Li1LIU Xing-yi2College of Electronic Science & Engineering, Jilin University, Changchun 130012, China;College of Physics, Jilin University, Changchun 130012, ChinaCollege of Electronic Science & Engineering, Jilin University, Changchun 130012, China;Pore spaced pure ZnO and Al<sub>2</sub>O<sub>3</sub>-doped ZnO(Al<sub>2</sub>O<sub>3</sub>-ZnO) micro-flowers were successfully synthesized by hydrothermal method. The microstructure, morphology and components were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometry (EDS), respectively. Gas sensors were made to investigate the gas sensing properties. The results reveal that the sensor based on Al<sub>2</sub>O<sub>3</sub>-ZnO shows a high sensitivity to acetone. The sensitivity is 82.8 to 100&#215;10<sup>-6 </sup>acetone gas at 260℃, which is about 4.6 times larger than that of pure ZnO (18.0) at similar conditions. The response time and recovery time are about 3s and 8s, respectively. Al<sub>2</sub>O<sub>3</sub>-ZnO also shows an excellent selectivity. Its sensitivity to acetone is 3.16 times higher than that to ethanol, which has the highest sensitivity among interfering gases under the same conditions. Thus, Al<sub>2</sub>O<sub>3</sub>-ZnO sensors can successfully distinguish acetone and ethanol with similar properties. In addition, the lowest detection to acetone is about 0.25&#215;10<sup>-6</sup> with theresponse is about 3.1.http://jme.biam.ac.cn/CN/Y2017/V45/I2/12hydrothermal methodacetoneAl<sub>2</sub>O<sub>3</sub>-ZnO micro-flowergas sensor
collection DOAJ
language zho
format Article
sources DOAJ
author LIU Chang-bai
LIU Li
LIU Xing-yi
spellingShingle LIU Chang-bai
LIU Li
LIU Xing-yi
Ultrahigh Sensitivity and Excellent Selectivity of Al<sub>2</sub>O<sub>3</sub>-doped ZnO Micro-flowers to Acetone
Journal of Materials Engineering
hydrothermal method
acetone
Al<sub>2</sub>O<sub>3</sub>-ZnO micro-flower
gas sensor
author_facet LIU Chang-bai
LIU Li
LIU Xing-yi
author_sort LIU Chang-bai
title Ultrahigh Sensitivity and Excellent Selectivity of Al<sub>2</sub>O<sub>3</sub>-doped ZnO Micro-flowers to Acetone
title_short Ultrahigh Sensitivity and Excellent Selectivity of Al<sub>2</sub>O<sub>3</sub>-doped ZnO Micro-flowers to Acetone
title_full Ultrahigh Sensitivity and Excellent Selectivity of Al<sub>2</sub>O<sub>3</sub>-doped ZnO Micro-flowers to Acetone
title_fullStr Ultrahigh Sensitivity and Excellent Selectivity of Al<sub>2</sub>O<sub>3</sub>-doped ZnO Micro-flowers to Acetone
title_full_unstemmed Ultrahigh Sensitivity and Excellent Selectivity of Al<sub>2</sub>O<sub>3</sub>-doped ZnO Micro-flowers to Acetone
title_sort ultrahigh sensitivity and excellent selectivity of al<sub>2</sub>o<sub>3</sub>-doped zno micro-flowers to acetone
publisher Journal of Materials Engineering
series Journal of Materials Engineering
issn 1001-4381
1001-4381
publishDate 2017-02-01
description Pore spaced pure ZnO and Al<sub>2</sub>O<sub>3</sub>-doped ZnO(Al<sub>2</sub>O<sub>3</sub>-ZnO) micro-flowers were successfully synthesized by hydrothermal method. The microstructure, morphology and components were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometry (EDS), respectively. Gas sensors were made to investigate the gas sensing properties. The results reveal that the sensor based on Al<sub>2</sub>O<sub>3</sub>-ZnO shows a high sensitivity to acetone. The sensitivity is 82.8 to 100&#215;10<sup>-6 </sup>acetone gas at 260℃, which is about 4.6 times larger than that of pure ZnO (18.0) at similar conditions. The response time and recovery time are about 3s and 8s, respectively. Al<sub>2</sub>O<sub>3</sub>-ZnO also shows an excellent selectivity. Its sensitivity to acetone is 3.16 times higher than that to ethanol, which has the highest sensitivity among interfering gases under the same conditions. Thus, Al<sub>2</sub>O<sub>3</sub>-ZnO sensors can successfully distinguish acetone and ethanol with similar properties. In addition, the lowest detection to acetone is about 0.25&#215;10<sup>-6</sup> with theresponse is about 3.1.
topic hydrothermal method
acetone
Al<sub>2</sub>O<sub>3</sub>-ZnO micro-flower
gas sensor
url http://jme.biam.ac.cn/CN/Y2017/V45/I2/12
work_keys_str_mv AT liuchangbai ultrahighsensitivityandexcellentselectivityofalsub2subosub3subdopedznomicroflowerstoacetone
AT liuli ultrahighsensitivityandexcellentselectivityofalsub2subosub3subdopedznomicroflowerstoacetone
AT liuxingyi ultrahighsensitivityandexcellentselectivityofalsub2subosub3subdopedznomicroflowerstoacetone
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