Influence Of SnO2 Research Articles

Influence of SnO2, MgO, and MnO3 nanoparticles on Some Physical Characteristics of PVP: CMC films

Influence of SnO2, MgO, and MnO3 nanoparticles on Some Physical Characteristics of PVP: CMC films

The Influence of SnO2 and Noble Metals on the Properties of TiO2 for Environmental Sustainability

In order to find solutions to current worldwide environmental problems, it is crucial to develop sustainable nanomaterials, ideally with multifunctional properties. Considering this, novel TiO2-SnO2@NMs (noble metals: Au and Ag) composites, for use as sustainable nanomaterials, were successfully prepared via a two-step synthesis process consisting of laser pyrolysis followed by the chemical impregnation of the collected materials with noble metals. The addition of SnO2 favors the transformation of TiO2 from a mixture with a majority Anatase phase to one with a Rutile phase majority. With consideration for their level of environmental toxicity, the features of the synthesized nanomaterials were structurally, morphologically, and optically described and assessed for environmental protection applications as gas sensors and photocatalysts. In the case of the Surface Acoustic Wave sensor, based on a pure TiO2 nanopowder, a notable difference in the frequency shift was detected in comparison to the other examined sensors. All sensors responded to the CH4 concentrations tested (0.02–0.1%). On the other hand, when methyl orange was photodegraded under visible light, the results obtained using NMs for decoration revealed that the photocatalytic activity of TiO2-SnO2@NMs was significantly improved compared to the TiO2-SnO2 binary composite, which already has an enhanced photocatalytic activity, compared to pure TiO2. Overall, this work produces nanoparticles that exhibit better sensory and photocatalytic features, as well as higher levels of biocompatibility with skin cells, for use as eco-friendly nanomaterials for a sustainable future.

Influence of SnO2, ZnO and TiO2 layer on the performance of CIGS and CdTe solar cells

As a type electron transmission layer, SnO2, ZnO and TiO2 layer were applied as a buffer between transparent conductive oxide and n-CdS layer in CIGS and CdTe solar cells. J-V curve of device with three different buffer layer were simulated theoretically through Poisson equation and electron-hole continuity equation. Open-circuit voltage, short-circuit current, fill factor and conversion efficiency were derived. It’s shown that for CdTe solar cells, performance of device with three kind of buffer layers SnO2, ZnO and TiO2 did not differ two much. While for the CIGS solar cells, device with TiO2 showed a small fill factor, then leading to a lower conversion efficiency. Transparent oxide SnO2 and ZnO were suggested for the buffer layer for optimization CIGS and CdTe solar structure depending on the art of manufacturing.

Hydrolytic Resistance of Na<sub>2</sub>O–SiO<sub>2</sub>–SnO<sub>2 </sub>Glass System

The influence of SnO2 on the chemical stability of sodium silicate glasses is investigated. The six glass compositions of ySnO2–37.9Na2O–(62.1-y)SiO2, y=1–8 mol.%, system were synthesized. Thermal behavior of the glasses was studied with the methods of dilatometry and DSC. It is shown that the hydrolytic resistance increases when growing the SnO2 concentration in the glass composition at constant Na2O content.

Fabrication of hybrid gel nanofibrous polymer electrolyte for lithium ion battery

Fibrous membranes are promising separators for high-performance lithium ion battery because of their high porosity and superior electrolyte uptake. In this paper, the fabrication of hybrid gel polymer electrolyte (HGPE) by introducing SnO2 nanoparticles in poly(vinylidine fluoride) by electrospinning technique and soaking the electrospun nanofibrous membranes in 1 M LiPF6 in ethylene carbonate (EC)/diethyl carbonate (DEC) (1:1, v/v). The as-prepared electrospun HGPE with SnO2 nanofiller was characterized by scanning electron microscopy. The influence of SnO2 on the structure of polymer membrane, physical, and electrochemical properties is systematically investigated. HGPE shows significant high ionic conductivity 4.6 × 10[Formula: see text] S/cm at room-temperature and better cell performance such as discharge C-rate capability and cycle performance. The hybrid gel polymer nanofibrous membrane favors high uptake of lithium electrolyte so that electrolyte leakage is reduced. The gel polymer electrolyte with SnO2 filler was used for the fabrication of Li/PVdF-SnO2/LiFePO4 coin cell. The fabricated cell was evaluated at a current density of 0.2 C-rate and delivered stable and excellent cycle performance. This study revealed that the prepared HGPE can be employed as potential electrolyte for lithium ion batteries.

SnO2 modified thermal, mechanical and magneto optical property improvement of PbO-Bi2O3-B2O3 glass

SnO2 is a widely accepted room temperature ferromagnetic material and has found applications in rapidly growing fields of spintronics and magneto electronics. Faraday rotation diamagnetic glass has attracted research attentions in photonics, sensing and magneto optical devices due to their high refractive index, wide transmittance in UV and Fourier transform infrared (FT-IR) range and temperature independent Faraday rotation. In this paper, we report for the first time the fabrication of SnO2 modified diamagnetic glass with composition of xSnO2-(10-x) B2O3-30PbO-60Bi2O3 (x = 0, 2, 4, 6, 8 and 10 mol%) by melt-quenching method. The influence of SnO2 on glass forming ability, thermal, mechanical properties and Faraday rotation were evaluated through X-ray Diffraction (XRD), FT-IR, Raman, X-ray photoelectron spectroscopy (XPS), differential scanning calorimetry (DSC), Vicker's hardness and Verdet constant measurements. Good vitrification was achieved with SnO2 amount ≤ 6 mol%. XRD spectra confirmed that too much SnO2 exist as distorted SnO6 polyhedra and there is obvious direct interaction between tin and Bi2O3 structural units. FT-IR, Raman and XPS spectra ascertain the existence of characteristic vibration of SnO4, SnO6, PbO4, BiO3 and BO3 units. Glass with 4%SnO2 exhibited significant good glass thermal stability (102 °C), big Vicker's hardness (369 HV), high Verdet constant (0.1424 min/G.cm at 633 nm) and big cutoff wavelength (432 nm) due to the enhanced network connectivity, brought about by inclusion of high polarization and magnetization strong Sn–O linkages.

Sol-gel synthesis of less expensive mesoporous titania-tin dioxide systems: Investigation of the influence of tin dioxide on the phase structure, morphology and optical properties

Herein the influence of SnO2 on the optical, morphology and phase structure of mesoporous TiO2-SnO2 composites was examined. Composites with Sn/Ti ratio ranging from 0.1 to 5 were synthesized using less expensive sources in the absence of additives. The obtained samples were examined by XRD, HRTEM, SEM-EDAX, XPS, UV–vis DRS, XRF, TGA and nitrogen gas physisorption studies analyses. The physicochemical properties of the TiO2-SnO2 systems depended mainly on the Sn-to-Ti ratio, calcination temperature and the interaction between Sn4+and Ti4+. XRD results depicted that samples with Sn/Ti=0.1 calcined at ≤600°C exhibited pure anatase TiO2 crystals and the tendency of increasing Sn4+ content facilitated a phase transformation to attain rutile structure. Optical analyses of the samples showed that the absorption of the samples can be extended into the visible region. This study provides a systematic and economical method for large-scale production of TiO2 based composites with desirable properties for various applications.

Influence of SnO2 on ZnO–Bi2O3–Co2O3 based varistor ceramics

ZnO–Bi2O3–Co2O3 based varistors doped with SnO2, from 0 to 0.3mol% were prepared by conventional ceramic processing. The effect of SnO2 on the microstructure and the electrical characteristics of varistor samples were investigated. Results showed that the addition of small amounts of SnO2 inhibited the grain growth and induced a change of grain morphology. With increasing SnO2 doping level up to 0.3mol%, Bi2O3 reacted with SnO2 to form a cubic crystalline phase Bi2(Sn2O7) at 950°C and a pyrochlore phase Bi2Sn2O7 at 1100°C. Moreover, small amounts of SnO2 produced higher nonlinear coefficients and reduced leakage currents of ZnO–Bi2O3–Co2O3 based varistors. Meanwhile, the breakdown fields increased noticeably with the addition of SnO2, which was due to the decrease of average grain sizes. It was found that the addition of SnO2 as well as the sintering temperature had an obvious effect on the insulating level at grain boundary region, which was indicated from the changes of relative dielectric constants.

Publisher's Note: “Influence of SnO2:F/ZnO:Al bi-layer as a front electrode on the properties of p-i-n amorphous silicon based thin film solar cells” [Appl. Phys. Lett. 102, 191602 (2013)

Publisher's Note: “Influence of SnO2:F/ZnO:Al bi-layer as a front electrode on the properties of p-i-n amorphous silicon based thin film solar cells” [Appl. Phys. Lett. 102, 191602 (2013)

Morphological, structural, and gas-sensing characterization of tin-doped indium oxide nanoparticles

Tin-doped indium oxide (ITO) nanoparticles with stable cubic phases were synthesized using a sol–gel combustion method that includes gelation and combustion in organic fuel. The influence of SnO2 on the phase and morphology of the In2O3 nanoparticles were studied by X-ray diffraction, scanning electron microscopy, and high resolution transmission electron microscopy (TEM), along with selected area electron diffraction. ITO nanoparticles with 11–20 nm crystallite size and 69–46 m2⧸g specific surface area were obtained. The lattice constant was nearly 10.12 Å, with orientation along the (222), (400), and (110) planes for all proportions of the doped SnO, indicating a stable cubic phase with high conductivity. The TEM micrograph of the ITO nanoparticles and powder revealed spherical morphology. The microstructure of the cured In2O3:Sn with Sn concentrations of 5, 10, 20, and 50 wt% demonstrated that the ITO nanoparticles clustered more densely with the increase in Sn concentration. The gas-sensing ability of the synthesized powders was demonstrated through the sensing of ethanol vapor at 200 °C.

Influence of SnO2:F/ZnO:Al bi-layer as a front electrode on the properties of p-i-n amorphous silicon based thin film solar cells

The effect of aluminum doped zinc oxide film used between a fluorine doped tin oxide layer and a hydrogenated amorphous silicon carbide layer to improve the open circuit voltage (Voc) and fill factor (FF) for high efficiency thin film solar cells. The efficiency enhancement was accomplished by the insertion of high work-function layers engineered in the interfaces to raise FF as well as Voc. Therefore, we were able to obtain the conversion efficiency of 10.34% at 16.14 mA/cm2 of the current density (Jsc) and 70.37% of FF.