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Gas-Sensing Properties of the Ti0.2V1.8CTx/V2O5 Nanocompositeстатья
- Авторы: Simonenko E.P., Mokrushin A.S., Nagornov I.A., Sapronova V.M., Gorban Yu M., Gorobtsov Ph Yu, Simonenko T.L., Simonenko N.P., Kuznetsov N.T.
- Журнал: Russian Journal of Inorganic Chemistry
- Год издания: 2024
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- DOI: 10.1134/S0036023624600850
- Аннотация: A method was developed for producing a nanocomposite containing a Ti0.2V1.8CTx MXene core and surface layers of titanium-doped vanadium oxide by relatively low temperature partial oxidation of multilayer MXene, a two-dimensional vanadium titanium carbide. It was shown that, during the oxidation of the initial Ti0.2V1.8CTx in an air atmosphere at a temperature of 250°C, the microstructure of accordion-like aggregates is preserved with a slight increase in the porosity of their constituent layers and an increase in their thickness due to the formation of V2O5. The MXene structure was detected to be preserved with a decrease in the interplanar distance from 10.3 Å (initial Ti0.2V1.8CTx powder) to 7.3 Å. Raman spectroscopy confirmed the formation of vanadium oxide. Kelvin probe force microscopy determined that, in the formation of Ti0.2V1.8CTx/V2O5 nanocomposite, the work function decreases from 4.88 eV (Ti0.2V1.8CTx) to 4.68 eV. Acomprehensive analysis was made of the chemosensory properties of Ti0.2V1.8CTx/V2O5 layers deposited by microplotter printing to a number of gaseous analytes (H2, CO, NH3, NO2, C6H6, C3H6O, CH4, C2H5OH, and O2). At elevated detection temperatures (125–200°C), high sensitivity to oxygen (10% O2) and NO2 (100 ppm) was detected; throughout the entire temperature range (25–200°C), there were noticeable responses to humidity (50% RH). If the temperature detection was room temperature, good sensitivity to acetone, ethanol, and ammonia was observed
- Добавил в систему: Сапронова Виолетта Максимовна