Porous 2D CuO nanosheets for efficient triethylamine detection at low temperature

Feng Wang, Haoran Zhong, Zhenlu Chen, Ding Wang, Zhuangchai Lai, Yonghui Deng, Xianying Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review


The freshness of seafood can be judged by detecting the concentration of triethylamine (TEA). In this work, 2D CuO porous nanosheets (CuO PNs) were prepared by a graphene oxide template method and their particle sizes were regulated by changing the calcination temperature. Their structure, morphology and gas sensing performances were investigated by various characterization methods. The response (Rg/Ra) of the gas sensor based on CuO PNs calcined at 700 oC was as high as 440 toward 100 ppm TEA at the operating temperature of 40 °C. The detection limit was as low as 0.25 ppm. In addition, the gas sensor has good selectivity and stability. The excellent TEA sensitivity is mainly resulted from the appropriate particle size and loose porous framework. This work not only paves the way to explore the novel low temperature TEA gas sensors, but also provides deep insight on improving the structure and properties of gas sensitive materials by controlling the calcination temperature.
Original languageEnglish
JournalChinese Chemical Letters
Publication statusPublished - 4 Apr 2022


  • CuO nanosheets
  • Gas sensor
  • Porous materials
  • Triethylamine detection
  • Low operating temperature

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