Atomic layer deposition of ZnO onto Fe2O3nanoplates for enhanced H2S sensing

Kai Fan; Jing Guo; Limei Cha; Qinjun Chen; Jianmin Ma

doi:10.1016/j.jallcom.2016.12.203

Atomic layer deposition of ZnO onto Fe₂O₃nanoplates for enhanced H₂S sensing

Kai Fan, Jing Guo, Limei Cha, Qinjun Chen, Jianmin Ma^*

^*Corresponding author for this work

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

65 Scopus citations

Abstract

We report a gas sensor for testing H₂S gas based on Fe₂O₃/ZnO heterostructure, which was synthesized using the atomic layer deposition (ALD) technique. Compared with the Fe₂O₃nanosheet gas sensor and ZnO gas sensor, the Fe₂O₃/ZnO heterostructure gas sensors exhibits better sensing performance at the temperature ranging from 150 °C to 350 °C. In the environment of 100 ppm H₂S at 250 °C, the highest response of Fe₂O₃/ZnO heterostructure gas sensor, about 133.1, was obtained, which is approximately 15-fold as large as that of the Fe₂O₃nanosheet gas sensor (about 8.7). In addition, the response of Fe₂O₃/ZnO heterostructure gas sensor reached 21.7, 11.3, 4.9, 6.7, 3.6–100 ppm isopropanol, NO, acetone, ethanol, and methane in the same condition, respectively. These results also reveal that the Fe₂O₃/ZnO heterostructure gas sensor exhibited the high selectivity. Our results suggest that the Fe₂O₃/ZnO heterostructure can be a promising candidate for high-performance H₂S gas sensors.

Original language	English
Pages (from-to)	336-340
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	698
DOIs	https://doi.org/10.1016/j.jallcom.2016.12.203
State	Published - 2017
Externally published	Yes

Keywords

FeO
Gas sensor
Heterostructure
Nanostructures
ZnO

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10.1016/j.jallcom.2016.12.203

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title = "Atomic layer deposition of ZnO onto Fe2O3nanoplates for enhanced H2S sensing",

abstract = "We report a gas sensor for testing H2S gas based on Fe2O3/ZnO heterostructure, which was synthesized using the atomic layer deposition (ALD) technique. Compared with the Fe2O3nanosheet gas sensor and ZnO gas sensor, the Fe2O3/ZnO heterostructure gas sensors exhibits better sensing performance at the temperature ranging from 150 °C to 350 °C. In the environment of 100 ppm H2S at 250 °C, the highest response of Fe2O3/ZnO heterostructure gas sensor, about 133.1, was obtained, which is approximately 15-fold as large as that of the Fe2O3nanosheet gas sensor (about 8.7). In addition, the response of Fe2O3/ZnO heterostructure gas sensor reached 21.7, 11.3, 4.9, 6.7, 3.6–100 ppm isopropanol, NO, acetone, ethanol, and methane in the same condition, respectively. These results also reveal that the Fe2O3/ZnO heterostructure gas sensor exhibited the high selectivity. Our results suggest that the Fe2O3/ZnO heterostructure can be a promising candidate for high-performance H2S gas sensors.",

keywords = "FeO, Gas sensor, Heterostructure, Nanostructures, ZnO",

author = "Kai Fan and Jing Guo and Limei Cha and Qinjun Chen and Jianmin Ma",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

doi = "10.1016/j.jallcom.2016.12.203",

language = "英语",

volume = "698",

pages = "336--340",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

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TY - JOUR

T1 - Atomic layer deposition of ZnO onto Fe2O3nanoplates for enhanced H2S sensing

AU - Fan, Kai

AU - Guo, Jing

AU - Cha, Limei

AU - Chen, Qinjun

AU - Ma, Jianmin

PY - 2017

Y1 - 2017

N2 - We report a gas sensor for testing H2S gas based on Fe2O3/ZnO heterostructure, which was synthesized using the atomic layer deposition (ALD) technique. Compared with the Fe2O3nanosheet gas sensor and ZnO gas sensor, the Fe2O3/ZnO heterostructure gas sensors exhibits better sensing performance at the temperature ranging from 150 °C to 350 °C. In the environment of 100 ppm H2S at 250 °C, the highest response of Fe2O3/ZnO heterostructure gas sensor, about 133.1, was obtained, which is approximately 15-fold as large as that of the Fe2O3nanosheet gas sensor (about 8.7). In addition, the response of Fe2O3/ZnO heterostructure gas sensor reached 21.7, 11.3, 4.9, 6.7, 3.6–100 ppm isopropanol, NO, acetone, ethanol, and methane in the same condition, respectively. These results also reveal that the Fe2O3/ZnO heterostructure gas sensor exhibited the high selectivity. Our results suggest that the Fe2O3/ZnO heterostructure can be a promising candidate for high-performance H2S gas sensors.

AB - We report a gas sensor for testing H2S gas based on Fe2O3/ZnO heterostructure, which was synthesized using the atomic layer deposition (ALD) technique. Compared with the Fe2O3nanosheet gas sensor and ZnO gas sensor, the Fe2O3/ZnO heterostructure gas sensors exhibits better sensing performance at the temperature ranging from 150 °C to 350 °C. In the environment of 100 ppm H2S at 250 °C, the highest response of Fe2O3/ZnO heterostructure gas sensor, about 133.1, was obtained, which is approximately 15-fold as large as that of the Fe2O3nanosheet gas sensor (about 8.7). In addition, the response of Fe2O3/ZnO heterostructure gas sensor reached 21.7, 11.3, 4.9, 6.7, 3.6–100 ppm isopropanol, NO, acetone, ethanol, and methane in the same condition, respectively. These results also reveal that the Fe2O3/ZnO heterostructure gas sensor exhibited the high selectivity. Our results suggest that the Fe2O3/ZnO heterostructure can be a promising candidate for high-performance H2S gas sensors.

KW - FeO

KW - Gas sensor

KW - Heterostructure

KW - Nanostructures

KW - ZnO

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U2 - 10.1016/j.jallcom.2016.12.203

DO - 10.1016/j.jallcom.2016.12.203

M3 - 文章

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SN - 0925-8388

VL - 698

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EP - 340

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Atomic layer deposition of ZnO onto Fe₂O₃nanoplates for enhanced H₂S sensing

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Keywords

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