Highly Selective Polyene-Polyyne Resistive Gas Sensors: Response Tuning by Low-Energy Ion Irradiation

被引:11
作者
Zavidovskiy, Ilya A. A. [1 ,2 ]
Streletskiy, Oleg A. A. [1 ]
Nuriahmetov, Islam E. F. [1 ]
Nishchak, Olesya Yu. [1 ]
Savchenko, Natalya F. F. [1 ]
Tatarintsev, Andrey A. A. [1 ]
Pavlikov, Alexander V. V. [1 ]
机构
[1] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia
[2] Moscow Inst Phys & Technol, Ctr Photon & Mat 2D, Dolgoprudnyi 141700, Russia
来源
JOURNAL OF COMPOSITES SCIENCE | 2023年 / 7卷 / 04期
关键词
incomplete dehydrohalogenation; low-energy Ar+ ion treatment; mechanism of NH3 selective resistive sensing; polyvinylidene fluoride carbonization; porous sp-based films; POLY(VINYLIDENE FLUORIDE); OPTICAL-PROPERTIES; CARBON NANOTUBES; RAMAN-SPECTRA; DEHYDROFLUORINATION; GRAPHENE; FILMS; PVDF; FTIR; SPECTROSCOPY;
D O I
10.3390/jcs7040156
中图分类号
TB33 [复合材料];
学科分类号
摘要
The formation of polyene-polyyne-based nanocomposites by dehydrohalogenation of the drop-cast-deposited polyvinylidene fluoride, assessment and ion-induced tailoring of their gas sensing properties are reported. The investigated structure was analyzed by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy, transmission electron microscopy and Fourier-transform infrared spectroscopy, revealing the thickness-dependent incomplete dehydrofluorination of the structure and its porosity induced by KOH treatment. The polyene-polyyne structures modified by low-energy Ar+ were studied by SEM and Raman spectroscopy, which showed the morphology variation, the shortening of chains and the graphitization of samples. The resistive gas sensing properties of the samples were analyzed at room temperature, revealing selective sensing of ammonia vapor by non-irradiated sample and the enhancement of the sensing properties for ethanol and water vapor after ion irradiation. With the ion dose enlargement, the change in the sensing response from electrical conductivity increase to decrease was observed for ammonia and ethanol, allowing us to discuss the origin and tunability of the sensing mechanism of the samples.
引用
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页数:21
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