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    • ZIF-67 Doped SnO2 and Its Derivative: Synthesis, Structure, and Triethylamine Gas Sensing Performance

    Yingyue Wang,Guojian Zhang,Jinyang Huang,Mengying Long,Dongmin An

    JOURNAL OF ALLOYS AND COMPOUNDS（2025）

    Civil Aviat Univ China

    Cited 0|Views10
    Abstract
    In this paper, pure SnO2 and SnO2 composite materials (ZSnO(2)) modified with different amounts of ZIF-67 (20 mg, 60 mg) were synthesized utilizing a simple solvothermal method. The gas sensing performance of these sensitive materials was tested, and the results manifested that at a low operating temperature of 170 degree celsius, the responses of ZSnO(2)-60 and ZSnO(2)-20-50 ppm triethylamine (TEA) gas reached 142.6 and 83.7, respectively, which was similar to 3.81 and similar to 2.24 times that of pure SnO2 (34.7). In addition, both doped samples had lower operating temperature, excellent selectivity and repeatability towards TEA gas. The doping of ZIF-67 led to oxygen vacancies increasing, specific surface area amplifying and p-n heterojunctions forming between Co3O4 and SnO2 in ZSnO(2) nanocomposites. These synergistic effects enhanced the gas sensitivity of ZSnO(2) nanocomposites to TEA gas.
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    Key words
    ZIF-67 doping,TEA,Gas sensing performance,SnO2
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