In-situ fabrication of ZnO nanoparticles sensors based on gas-sensing electrode for ppb-level H2S detection at room temperature

The zinc oxide(ZnO)nanoparticles(NPs)sensors were prepared in-situ on the gas-sensing electrodes by a one-step simple sol-gel method for the detection of hydrogen sulfide(H2S)gas.The sphere-like ZnO NPs were characterized by scanning electron microscopy(SEM),transmission electron microscopy(TEM),x-r...

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Published in:中国物理B（英文版） 2021-02, Vol.30 (2), p.278-285
Main Authors: Jing-Yue Xuan, Guo-Dong Zhao, Xiao-Bo Shi, Wei Geng, Heng-Zheng Li, Mei-Ling Sun, Fu-Chao Jia, Shu-Gang Tan, Guang-Chao Yin, Bo Liu
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container_issue 2
container_start_page 278
container_title 中国物理B（英文版）
container_volume 30
creator Jing-Yue Xuan
Guo-Dong Zhao
Xiao-Bo Shi
Wei Geng
Heng-Zheng Li
Mei-Ling Sun
Fu-Chao Jia
Shu-Gang Tan
Guang-Chao Yin
Bo Liu
description The zinc oxide(ZnO)nanoparticles(NPs)sensors were prepared in-situ on the gas-sensing electrodes by a one-step simple sol-gel method for the detection of hydrogen sulfide(H2S)gas.The sphere-like ZnO NPs were characterized by scanning electron microscopy(SEM),transmission electron microscopy(TEM),x-ray diffraction(XRD),energy dispersive x-ray analysis(EDX),and their H2S sensing performance were measured at room temperature.Testing results indicate that the ZnO NPs exhibit excellent response to H2S gas at room temperature.The response value of the optimal sample to 750 ppb H2S is 73.3％,the detection limit reaches to 30 ppb,and the response value is 7.5％.Furthermore,the effects of the calcining time and thickness of the film on the gas-sensing performance were investigated.Both calcining time and film thickness show a negative correlation with the H2S sensing performance.The corresponding reaction mechanism of H2S detection was also discussed.
doi_str_mv 10.1088/1674-1056/abcf46
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title In-situ fabrication of ZnO nanoparticles sensors based on gas-sensing electrode for ppb-level H2S detection at room temperature
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