Long-term and stable detection of H2S in a pig house at low operating temperature based on Ce2O3/In2O3 hollow microspheres with a remote monitoring system

A remote system for real time monitoring of H2S in a pig house combining with a new type of gas sensor fabricated via Ce2O3/In2O3 hollow microspheres (HMS) was successfully built. The microstructure and morphology of the microspheres and their gas sensing performance were investigated in detail. At...

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Veröffentlicht in:Sensors and actuators. B, Chemical Chemical, 2022-12, Vol.372, p.132609, Article 132609
Hauptverfasser: Cao, Zhong, Tang, Yi, Zou, Hao-Yun, Huang, Ying, Wu, Ling, Xiao, Zhong-Liang, Feng, Ze-Meng, Yin, Yu-Long, Yu, Donghong
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container_title Sensors and actuators. B, Chemical
container_volume 372
creator Cao, Zhong
Tang, Yi
Zou, Hao-Yun
Huang, Ying
Wu, Ling
Xiao, Zhong-Liang
Feng, Ze-Meng
Yin, Yu-Long
Yu, Donghong
description A remote system for real time monitoring of H2S in a pig house combining with a new type of gas sensor fabricated via Ce2O3/In2O3 hollow microspheres (HMS) was successfully built. The microstructure and morphology of the microspheres and their gas sensing performance were investigated in detail. At optimal operating temperature (100 ℃), the Ce2O3/In2O3 HMS composite exhibited excellent sensing properties towards H2S, which afforded a linear response range from 0.10 to 100 ppm with a detection limit of 0.06 ppm and a short response time of 59 s. Compared with In2O3 based sensor, the Ce2O3/In2O3 HMS sensor presented not only low power consumption for efficient energy-saving, but also even high response ability. After 10 months of continuous monitoring of H2S gas in pig farm via Alibaba Cloud transmission network, only 5.4% of the sensor's response attenuated was found, indicating that the HMS based sensor had a long-term stable service lifetime suitable for remote monitoring in practical scene. Moreover, the sensor presented good thermo- and humidity-stability with good reproducibility and selectivity, making it an excellent monitor for H2S in atmospheric environment on livestock-raising field.
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subjects Gas sensors
Hydrogen sulfide
Indium oxides
Microspheres
Operating temperature
Power consumption
Remote monitoring
Remote sensors
Response time
Selectivity
Sensors
Service life
title Long-term and stable detection of H2S in a pig house at low operating temperature based on Ce2O3/In2O3 hollow microspheres with a remote monitoring system
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