Ethanol-Gas-Sensing Performances of Built-in ZrO 2 /Co 3 O 4 Hybrid Nanostructures.

Autor: Khan, Madiha, Ferlazzo, Angelo, Hussain, Mozaffar, Fazio, Enza, Corsaro, Carmelo, Mezzasalma, Angela Maria, Neri, Giovanni
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Zdroj: Sensors (14248220); Dec2023, Vol. 23 Issue 23, p9578, 13p
Abstrakt: The development of novel nanomaterials as highly efficient gas-sensing materials is envisaged as one of the most important routes in the field of gas-sensing research. However, developing stable, selective, and efficient materials for these purposes is a highly challenging task requiring numerous design attempts. In this work, a ZrO2/Co3O4 composite is reported, for the first time, as a gas-sensing material for the detection of ethanol. The sensitive and selective detection of ethanol gas at 200 °C has been demonstrated for the ZrO2/Co3O4 (0.20 wt%/0.20 wt%)-based sensor. Furthermore, the sensor showed a very low response/recovery time of 56 s and 363 s, respectively, in response to a pulse of 20 ppm of ethanol and good stability. The interesting gas-sensing property of ZrO2/Co3O4 can be ascribed to both the porous structure, which facilitates the interaction between the target gas and the sensing site, and the p–p-junction-induced built-in electric field. These results indicate that the ZrO2/Co3O4 composite can serve as a heterostructured nanomaterial for the detection of ethanol gas. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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