Journal
MATERIALS LETTERS
Volume 333, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2022.133641
Keywords
Microbial volatile organic compounds; ?-Nickel hydroxide; Gas sensor; Chemoresistive
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We report the VOC sensing performance of porous flower-like NiO to 3-methyl-1-butanol (3M1B), a microbial VOC that can be used as a food spoilage marker. The NiO-based sensor showed high sensitivity and selectivity to 3M1B compared to other VOCs, and exhibited fast response times under humidity conditions. NiO is a promising material for real applications.
Volatile organic compounds (VOCs) can indicate the quality or freshness of food. Thus, the development of VOC sensors has a tremendous technological impact. Herein, we report the VOC sensing performance of porous flower-like NiO to 3-methyl-1-butanol (3M1B), a microbial VOC that can be used as a food spoilage marker. Our results show that the NiO-based sensor has high sensitivity and selectivity to 3M1B compared to the other VOCs, including acetone, ethanol, butanone, 2-nonanone, and m-xylene. Moreover, we show that NiO exhibits a high response to 3M1B with fast response times under humidity conditions, being a promising material for real applications.
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