Comparison of Ammonia Sensing Characteristics of Individual SnO2 Nanowire and SnO2 Sol-gel Nanocomposite

Shaposhnik, A. V.; Ryabtsev, S. V.; Shao, Feng; Hernández-Ramírez, Francisco; Morante, Joan Ramón; Zviagin, Alexey A.; Sizask, E.; Shaposhnik, D. A.

doi:10.1016/j.proeng.2014.11.314

Cited by 3 publications

(3 citation statements)

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“…This group of materials includes SnO 2 , Bi 2 O 3 , TiO 2 , ZnO [9][10][11][12] . Among the many methods of their preparation such as the sol-gel method, chemical deposition, hydrothermal methods and magnetron sputtering, electrospinning method stands out [13][14][15][16][17] . The combination of the following two techniques of sol-gel and electrospinning used to prepare inorganic 1D nanostructures from metal oxides is gaining more and more interest due to the high quality of the product, simplicity, low manufacturing costs and a variety of available ceramic materials 18,19 .…”

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confidence: 99%

Synthesis of hybrid amorphous/crystalline SnO2 1D nanostructures: investigation of morphology, structure and optical properties

Matysiak

Tański

Smok

et al. 2020

Sci Rep

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The aim of the study was to prepare SnO2 nanowires via a combination of electrospinning and the sol–gel method from a polyvinylpyrrolidone (PVP)/dimetylformamide (DMF)/ethanol(EtOH)/tin(IV) chloride pentahydrate (SnCl4·5H2O) solution. The morphology, structure and chemical composition of the obtained PVP/SnO2 nanofibers and SnO2 nanowires were examined using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) as well as a scanning electron microscope (SEM) with an energy dispersive spectrometer (EDX). The optical property analysis was performed on the basis of UV–Vis spectra of absorbance as a function of the wavelength, based on which the rated values of band gaps of the fabricated 1D nanostructures were determined. The morphology analysis showed that the obtained amorphous SnO2 nanowires with crystalline protuberances were characterized by a diameter of 50 to 120 nm. Results demonstrated that nanowires with a ratio of 1:1 precursor to polymer in the spinning solution were characterized by the smallest diameter after calcination and the smallest energy gap of 3.3 eV among all investigated samples. The rest of the studied materials were characterized by a larger energy gap (3.8 and 3.9 eV).

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confidence: 99%

Synthesis of hybrid amorphous/crystalline SnO2 1D nanostructures: investigation of morphology, structure and optical properties

Matysiak

Tański

Smok

et al. 2020

Sci Rep

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“…Some results related to this comparison obtained by Dr. Dmitry Shaposhnik were used in his PhD thesis performed under the supervision of Professor X. Vilanova at the University Rovira I Virgili (Tarragona, Spain). The preliminary results concerning this publication were discussed at Eurosensors conferences [32–33]. The present work presents a comparative study of the material properties of SnO 2 devices prepared by different methods and by using ammonia as a reference gas for the assessment of their sensing characteristics.…”

Section: Introductionmentioning

confidence: 98%

“…Hierarchical structures with SnO 2 nanowires covered with additional nanoscale objects can be used for the improvement of electrical contacts [11,16–17]. A second direction in nanowire sensor development is the manufacturing of electrical contacts with individual nanowires [21–33]. These contacts can be made by means of photolithography, but more often, focused ion beam (FIB) technology is used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Gas sensing properties of individual SnO₂ nanowires and SnO₂ sol–gel nanocomposites

Shaposhnik¹,

Shaposhnik²,

Turishchev³

et al. 2019

Beilstein J. Nanotechnol.

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This work is an investigation of the properties of semiconductor materials based on metal oxides, their catalytic properties, and their application as gas sensors, which were shown to exhibit high sensitivity, stability, and selectivity to target gases. The aim of this work is the comparison of gas sensing properties of tin dioxide in the form of individual nanowires and nanopowders obtained by sol–gel synthesis. This comparison is necessary because the traditional synthesis procedures of small particle, metal oxide materials seem to be approaching their limit. Because of this, there is increasing interest in the fabrication of functional materials based on nanowires, i.e., quasi-one-dimensional objects. In this work, nanocrystalline tin dioxide samples with different morphology were synthesized. The gas-transport method was used for the fabrication of well-faceted wire-like crystals with diameters ranging between 15–100 nm. The sol–gel method allowed us to obtain fragile gels from powders with grain sizes of about 5 nm. By means of X-ray photoelectron spectroscopy (XPS) it was proven that the nanowires contain considerably smaller amounts of hydroxy groups compared to the nanopowders. This leads to a decrease in the parasitic sensitivity of the sensing materials to humidity. In addition, we demonstrated that the nanowires are characterized by a nearly single-crystalline structure, ensuring higher stability of the sensor response due to the unlikelihood of sample recrystallization. The results from the ammonia detection experiments showed that the ratio of the sensor response to the surface area exhibits similar values for both the individual nanowire and nanopowders-based sensor materials.

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Ammonia gas sensor based on SnO₂ nanostructure with the enhanced sensing capability at low temperatures

Shukla¹,

Pandey

Bajpai

et al. 2019

Phase Transitions

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Comparison of Ammonia Sensing Characteristics of Individual SnO2 Nanowire and SnO2 Sol-gel Nanocomposite

Cited by 3 publications

References 1 publication

Synthesis of hybrid amorphous/crystalline SnO2 1D nanostructures: investigation of morphology, structure and optical properties

Synthesis of hybrid amorphous/crystalline SnO2 1D nanostructures: investigation of morphology, structure and optical properties

Gas sensing properties of individual SnO₂ nanowires and SnO₂ sol–gel nanocomposites

Ammonia gas sensor based on SnO₂ nanostructure with the enhanced sensing capability at low temperatures

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Comparison of Ammonia Sensing Characteristics of Individual SnO2 Nanowire and SnO2 Sol-gel Nanocomposite

Cited by 3 publications

References 1 publication

Synthesis of hybrid amorphous/crystalline SnO2 1D nanostructures: investigation of morphology, structure and optical properties

Synthesis of hybrid amorphous/crystalline SnO2 1D nanostructures: investigation of morphology, structure and optical properties

Gas sensing properties of individual SnO2 nanowires and SnO2 sol–gel nanocomposites

Ammonia gas sensor based on SnO2 nanostructure with the enhanced sensing capability at low temperatures

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Product

Resources

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Gas sensing properties of individual SnO₂ nanowires and SnO₂ sol–gel nanocomposites

Ammonia gas sensor based on SnO₂ nanostructure with the enhanced sensing capability at low temperatures