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Electrospun ZnO/MOx nanocomposites as sensitive materials for biomarker gas sensors: Role of MOx in C1–C4 short-chain fatty acids detectionстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Platonov Vadim, Rumyantseva Marina
- Журнал: Sensors and Actuators, B: Chemical
- Том: 433
- Год издания: 2025
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 137535
- DOI: 10.1016/j.snb.2025.137535
- Аннотация: Nanofibers based on semiconductor oxide ZnO and modifiers MOx (M = FeIII, CoII,III, NiII, GaIII; [M]/([Zn] + [M]) = 15 mol%) were synthesized by electrospinning method and characterized by X-ray diffraction, scanning electron microscopy (SEM) and X-ray fluorescence analysis. Acidic properties of ZnO and ZnO/MOx nanofibers were characterized by Fourier-transform infrared spectroscopy (FTIR). The sensor properties of ZnO and ZnO/MOx nanofibers were studied towards 0.1–5 ppm of C1–C4 short-chain fatty acids (SCFAs: HCOOH, CH3COOH, C2H5COOH, C3H9COOH) in dry (relative humidity at 25 °C RH25 = 0 %) and humid (RH25 = 80 %) air. It was demonstrated that the sensitivity of ZnO/MOx nanofibers towards SCFAs is primarily influenced by the band bending at the ZnO/MOx interface, which can be characterized by the difference in the electron work function for a complex oxide MOx and for ZnO. The lowest measurable concentrations of SCFAs correspond to the sub-ppm level, including high air humidity conditions (RH25 = 80 %), that makes these materials possible candidates for use in electronic nose systems for medical analysis of SCFAs in exhaled breath.
- Добавил в систему: Румянцева Марина Николаевна
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