Enhanced visible light photocatalytic activity of tin oxide nanoparticles synthesized by different microwave optimum conditions

Parthibavarman, M.; Sathishkumar, S.; Prabhakaran, S.

doi:10.1007/s10854-017-8152-3

Cited by 44 publications

(20 citation statements)

References 17 publications

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“…SnO 2 nanostructure preparation can be achieved using several different techniques. These include the co-precipitation [ 26 ], sol-gel [ 28 , 29 ], solvothermal decomposition [ 30 , 31 ], microwave hydrothermal synthesis [ 32 , 33 ] and precipitation [ 34 ], techniques, as well as hydrothermal synthesis [ 35 , 36 ], and the polyol [ 37 ], solvothermal [ 38 ], and by microwave [ 39 , 40 , 41 ] methods. However, issues related to the complexity of the synthetic process, including the creation of effluent by-product, reagent toxicity, and longer reaction times, have made industrial SnO 2 nanopowder generation difficult to achieve, with the creation of a pure powder product having been entirely unachievable through the aforementioned techniques [ 42 ].…”

Section: Introductionmentioning

confidence: 99%

Thermal Calcination-Based Production of SnO2 Nanopowder: An Analysis of SnO2 Nanoparticle Characteristics and Antibacterial Activities

et al. 2018

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SnO2 nanoparticle production using thermal treatment with tin(II) chloride dihydrate and polyvinylpyrrolidone capping agent precursor materials for calcination was investigated. Samples were analyzed using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), energy dispersive X-ray (EDX), transmission electron microscopy (TEM), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), diffuse UV-vis reflectance spectra, photoluminescence (PL) spectra and the electron spin resonance (ESR). XRD analysis found tetragonal crystalline structures in the SnO2 nanoparticles generated through calcination. EDX and FT-IR spectroscopy phase analysis verified the derivation of the Sn and O in the SnO2 nanoparticle samples from the precursor materials. An average nanoparticle size of 4–15.5 nm was achieved by increasing calcination temperature from 500 °C to 800 °C, as confirmed through TEM. The valence state and surface composition of the resulting nanoparticle were analyzed using XPS. Diffuse UV-vis reflectance spectra were used to evaluate the optical energy gap using the Kubelka-Munk equation. Greater calcination temperature resulted in the energy band gap falling from 3.90 eV to 3.64 eV. PL spectra indicated a positive relationship between particle size and photoluminescence. Magnetic features were investigated through ESR, which revealed the presence of unpaired electrons. The magnetic field resonance decreases along with an increase of the g-factor value as the calcination temperature increased from 500 °C to 800 °C. Finally, Escherichia coli ATCC 25922 Gram (–ve) and Bacillus subtilis UPMC 1175 Gram (+ve) were used for in vitro evaluation of the tin oxide nanoparticle’s antibacterial activity. This work indicated that the zone of inhibition of 22 mm has good antibacterial activity toward the Gram-positive B. subtilis UPMC 1175.

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Section: Introductionmentioning

confidence: 99%

Thermal Calcination-Based Production of SnO2 Nanopowder: An Analysis of SnO2 Nanoparticle Characteristics and Antibacterial Activities

et al. 2018

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“…Further the extended absorption in the red shift wavelength was noticed after loading the RGO content. The K-M plot [28][29][30] (Fig. 4b).…”

Section: Optical Propertiesmentioning

confidence: 99%

“…Further the extended absorption in the red shift wavelength was noticed after loading the RGO content. The K-M plot [28][29][30] is used to estimate the optical band gap. The band gap energy of pure Fe 2 (MoO 4 ) 3 , FMG1, FMG2 and FMG5 are 2.55, 2.47, 2.35 and 2.25 eV, respectively (Fig.…”

Section: Optical Propertiesmentioning

confidence: 99%

Design and Fabrication of High Performance Photoanode of Fe2(MoO4)3/RGO Hybrid Composites For Triiodide Reduction in Dye-Sensitized Solar Cells

Thulasi¹,

Arunprasad²,

Karthik³

et al. 2021

Preprint

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Discovery of electrode materials with superior light harvesting performance with high conductivity nature have become more and more urgent for the field of photovoltaics and portable electronic devices. Here in, synthesis of Fe2(MoO4)3/reduced graphene oxide (RGO) nanocomposite was prepared by simple hydrothermal approach and used as high efficient dye sensitized solar cells (DSSCs). The decoration of RGO into the Fe2(MoO4)3 was proved by various physic-chemical studies such as XRD, SEM, TEM, Raman, UV, PL and BET analysis. Due to the synergic effect between the Fe2(MoO4)3 and RGO the light absorption property is significantly improved as well the high surface area (112.5 m2/g) and pore size (38.7 nm) was achieved than compared with bare Fe2(MoO4)3 (88.5 m2/g and 17.8 nm). The Fe2(MoO4)3/RGO hybrid photoanode establish to display an outstanding catalytic activity toward the reduction of triiodide to iodide in a dye-sensitized solar cell (DSSC) and can provide a solar cell efficiency of 9.65%, which is superior to a Pt-based DSSC (6.17%). The better electro-catalytic ability of Fe2(MoO4)3/RGO electrode is obtained by a synergistic effect that resulted in the high specific surface area and intrinsic reactivity of the photocathode materials.

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“…The reaction mixture containing both the photocatalysts and MB dye were irradiated with the uv light for (30, 60, 90, 120, 150 and 180 min) regular intervals of time and the sample was tested by UV-visible spectrophotometer to measure the steady state absorption. The photocatalytic degradation efficiency(E) of MB was calculated by, E%= [(1-Ct/Co)] x 100% (1) Where Ct is the concentration of MB solution with the photocatalysts (after irradiation of UV light for 't' time interval) and Co is the concentration of MB solution without catalysts [16].…”

Section: Photocatalytic Degradation Experimentsmentioning

confidence: 99%

“…Among these, Raman active modes are B1g, B2g, A1g and Eg while Eu and A2u corresponding to infrared active region. Acoustic modes are one A2u and two Eu [16,20] while A2g and B1u represents silent mode. Fig.…”

Section: Raman Spectroscopic Analysismentioning

confidence: 99%

Synthesis of SnO2 and Zn doped SnO2 Nanoparticles by Flame Oxidation Process for Photocatalytic degradation of Methylene Blue Dye

P¹,

Kathirvel²,

Maruthamani³

et al. 2021

Preprint

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A very simple and rapid flame oxidation method is effectively used to synthesis pure Tin Oxide (SnO2) and Zinc doped Tin Oxide (Zn:SnO2) nanoparticles from the metallic Tin (Sn) and Zinc (Zn) powders for the photocatalytic degradation of Methylene blue (MB) dye and characterized to study their structural, optical, elemental and chemical properties. From the X-ray diffraction analysis (XRD) it indicates that the synthesized SnO2 and Zn:SnO2 nanoparticles have pure tetragonal and cubical phases respectively and their average size increases when Zn was doped with SnO2. Raman spectral studies confirms the various mode of vibrations and the crystal structure of the synthesized nanoparticles from the spectral peaks of Raman shifts. Purity, atomic percentage and chemical composition were analysed using Energy dispersive X-ray analysis (EDX). The band gap energy was increasing from 3.5 eV to 3.6 eV when doping of Zn with SnO2, which was revealed from the UV-visible spectroscopic analysis. Photoluminescence analysis (PL) confirms the red shifted emission for Zn:SnO2 due to the oxygen deficiency. The CIE chromaticity(x,y) for SnO2 and Zn:SnO2 was calculated from the emission spectra and the cordinates represents blue and violet region respectively. Field Emission Scanning Electron Microscopy (FESEM) analysis shows that the pure SnO2 nanoparticles have irregular, agglomerated, nanoflowered and nanoclustered formation whereas Zn:SnO2 nanoparticles have more crystalline, cubical and nanoflakes structures. The photocatalytic activity was enhanced due to the presence of Zn in SnO2 under UV light irradiation. The efficiency of MB degradation by SnO2 and Zn:SnO2 nanoparticles are above 80%, which proves to be an effective photocatalyst.

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Enhanced visible light photocatalytic activity of tin oxide nanoparticles synthesized by different microwave optimum conditions

Cited by 44 publications

References 17 publications

Thermal Calcination-Based Production of SnO2 Nanopowder: An Analysis of SnO2 Nanoparticle Characteristics and Antibacterial Activities

Thermal Calcination-Based Production of SnO2 Nanopowder: An Analysis of SnO2 Nanoparticle Characteristics and Antibacterial Activities

Design and Fabrication of High Performance Photoanode of Fe2(MoO4)3/RGO Hybrid Composites For Triiodide Reduction in Dye-Sensitized Solar Cells

Synthesis of SnO2 and Zn doped SnO2 Nanoparticles by Flame Oxidation Process for Photocatalytic degradation of Methylene Blue Dye

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