RETRACTED ARTICLE: An investigation on the properties of SnO2 nanoparticles synthesized using two different methods

Shalan, Ahmed Esmail; Osama, I.; Rashad, M.M.; Ibrahim, I. A.

doi:10.1007/s10854-013-1586-3

Cited by 20 publications

(13 citation statements)

References 31 publications

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“…Out of these two peaks, the intensity of the former became smaller relative to the latter after co-milling, particularly for PVdF. A similar tendency was observed by increasing the annealing temperature (Shalan et al 2014). From these observations, we reasonably suppose that the absorption band at around 1380 cm -1 reflects the Sn-OH closer to the surface and that the interaction between SnO 2 and FCS by co-milling occurs at the cost of nearsurface Sn-OH sites.…”

Section: Infrared Spectrasupporting

confidence: 66%

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Modification of tin oxide nanoparticles by fluorocarbon solids via a mechanochemical route

et al. 2015

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Interfacial reactions at the surface of SnO 2 nanoparticles adjacent to the fluorocarbon solids (FCS) under mechanical stressing were compared in an attempt to their modification by introducing fluorine and carbon. Emphasis was laid on the comparison of the reactivity of 3 different species of FCS, i.e., polyvinylidene fluoride (PVdF), polytetrafluoroethylene (PTFE), and perfluorooctanoic acid (PFOA). PVdF exhibited the highest reactivity, followed by PTFE and PFOA, as confirmed by Raman, FT-IR, XPS, and 19 F MAS NMR spectra. The preferential reactivity could be explained in terms of the electrophilicity of FCS toward the nucleophilic oxygen in SnO 2 , since the decomposition of FCS is catalyzed by the coexisting SnO 2 . PFOA behaved in a different manner, due to its carboxylic groups. At the same time, carbon nanospecies were introduced as a decomposed product of FCS. This results in the formation of SnO 2 :F/C nanocomposite. Fluorine introduced to SnO 2 survived even after heating up to 600°C either in air or in Ar. This indicates the thermal stability of the present partially fluorinated SnO 2 nanoparticles.

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Section: Infrared Spectrasupporting

confidence: 66%

“…5c, d). They are most probably due to the overtone of Sn-O stretching and Sn-O-Sn bending with the participation of surface hydroxyl groups, Sn-OH (Karelin et al 2013;Mehraj et al 2013;Shalan et al 2014). Out of these two peaks, the intensity of the former became smaller relative to the latter after co-milling, particularly for PVdF.…”

Section: Infrared Spectramentioning

confidence: 99%

Modification of tin oxide nanoparticles by fluorocarbon solids via a mechanochemical route

et al. 2015

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“…It was observed that the material is not fully crystalline, since the degree of crystallinity varied with each calcination temperature. It was reported that the increased SnO 2 calcination temperature obtained by different methods coincided with a rise in both particle size and degree of cystallinity, as well as a reduction in the energy gap [23]. Clusters of SnO 2 particles were observed using transmission electron spectroscopy (TEM), with particle sizes similar to the crystal size obtained by XRD, demonstrating an increase in these values with a rise in calcination temperature [21].…”

Section: X-ray Diffraction -Xrdmentioning

confidence: 76%

Characterization of tin dioxide nanoparticles synthesized by oxidation

2015

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Tin dioxide (SnO2) is a promising material with great potential for applications such as gas sensors and catalysts. Nanostructures of this oxide exhibit greater activation efficiency given their larger effective surface. The present study presents results of the synthesis and characterization of tin dioxide under different conditions via oxidation of solid tin with nitric oxide. SnO2powder was characterized primarily by X-ray diffraction and scanning electron microscopy, as well as complementary techniques such as energy-dispersive X-ray spectroscopy, dynamic light scattering and Fourier transform infrared spectroscopy. The results indicated that the established synthesis conditions were suitable for obtaining rutile tin dioxide nanoparticles with a tetragonal crystal structure.

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“…The mesoporous structure of the samples determines the origin of the type IV isotherm 27 . Shalan et al 28 reported a decline in the volume of the gas adsorbed with an increase in calcination temperature. The authors also observed that this led to a reduction in specific surface area and pore volume (O1B and O2A) due to changes in the sample particle size ( Table 2).…”

Section: Materials Characterizationmentioning

confidence: 99%

Application of SnO2 Nanoparticles and Zeolites in Coal Mine Methane Sensors

et al. 2019

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We evaluated solid-state sensors (MOS) manufactured using nanostructured tin oxide (SnO 2) obtained by different synthesis methods for selectivity, response and repeatability at different operating temperatures and methane concentrations. In addition, Zeolite 13X pellets were placed in front of the sensors to improve CH 4 selectivity in the presence of CO 2. The palladium doped sensor (1.4% w/w) showed the highest sensitivity at 80 ºC (83%) and shorter response times (16 s), whereas non-doped sensors exhibited the best sensitivity (78%) and response times (14 s) for those with smaller particle size (8 nm). Zeolite 13X pellets proved to be efficient at making the sensor more selective for CH 4 in the presence of CO 2 .

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RETRACTED ARTICLE: An investigation on the properties of SnO2 nanoparticles synthesized using two different methods

Cited by 20 publications

References 31 publications

Modification of tin oxide nanoparticles by fluorocarbon solids via a mechanochemical route

Modification of tin oxide nanoparticles by fluorocarbon solids via a mechanochemical route

Characterization of tin dioxide nanoparticles synthesized by oxidation

Application of SnO2 Nanoparticles and Zeolites in Coal Mine Methane Sensors

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