Raman and photoacoustic spectroscopies of SnO2 thin films deposited by spin coating technique

Drabeski, Regiane Gordia; Gunha, Jaqueline Valeski; Novatski, Andressa; Souza, Gelson Biscaia de; Tebcherani, S. M.; Kubaski, Evaldo Toniolo; Dias, Daniele Toniolo

doi:10.1016/j.vibspec.2020.103094

Cited by 29 publications

(4 citation statements)

References 35 publications

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“…For a better representation of the peaks, the SnO 2 Raman diagram is shown separately in figure 7(b). The prominent Raman bands at 497 and 621, are attributed to E g , and A 1g modes of SnO 2 , respectively [23,24,31]. These findings are in good correlation with the XRD results.…”

Section: Raman Analysissupporting

confidence: 82%

Investigating the structural, optical, and photocatalytic activity of TiO₂/SnO₂ nanocomposites synthesized by the facile sol-gel technique for dye degradation

Soleimani¹,

Rahmani²

2022

Phys. Scr.

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The photocatalytic degradation of dyes using semiconducting metal oxides has received a lot of interest recently. In this work, TiO2, SnO2, and TiO2/SnO2 nanocomposites with different SnO2 contents were synthesized via the facile and cost-effective sol-gel method and fully characterized. X-ray diffraction (XRD) pattern analysis indicated that the crystallite size reduced remarkably and the transformation of anatase to rutile phase accelerated significantly with increasing the SnO2 content. Raman spectroscopy confirmed the XRD results. Electron microscope images revealed that the TiO2/SnO2 composites have composed of semi-spherical fused particles, where increasing the SnO2 content causes the reduction of the particles’ size. The addition of SnO2 caused the photoluminescence (PL) intensity reduction due to the easy migration of photoelectrons from the TiO2 to the SnO2 conduction band, leading to a decrease in the recombination of photogenerated electron-hole pairs. Catalytic activity was tested by methylene blue under 360 nm ultraviolet (UV) irradiation. Intrinsic TiO2 showed better photocatalytic activity than pure SnO2, but the color degradation was still less than 50% after 90 min UV irradiation. Increasing the SnO2 content in the TiO2 produced nanocomposites with higher color degradation rates of about 73 % after 90 min UV irradiation, suggesting the binary metal oxide TiO2/SnO2 nanocomposite photocatalyst as a promising candidate for effluent dye removal.

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Section: Raman Analysissupporting

confidence: 82%

Investigating the structural, optical, and photocatalytic activity of TiO₂/SnO₂ nanocomposites synthesized by the facile sol-gel technique for dye degradation

Soleimani¹,

Rahmani²

2022

Phys. Scr.

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“…2, curve 1), which are attributed to SnO 2 . 41–44 The registered Raman shifts at 238.5 and 624.9 cm −1 , along with a broad shoulder-type band at approximately 440–470 cm −1 , are indicative of oxygen vacancies in tin oxide. 41,42 In turn, the signal obtained for the sample with a red coating (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…41–44 The registered Raman shifts at 238.5 and 624.9 cm −1 , along with a broad shoulder-type band at approximately 440–470 cm −1 , are indicative of oxygen vacancies in tin oxide. 41,42 In turn, the signal obtained for the sample with a red coating (Fig. 1(e)) contains the peaks with maxima at 224.3, 245.9, 292.3, 410.9, 499.3, 612.7, and 1317.1 cm −1 (Fig.…”

Section: Resultsmentioning

confidence: 99%

Hematite photoanodes for water splitting from directed assembly of Prussian blue onto CuO–Sb₂O₅–SnO₂ ceramics

Bondarchuk,

Marken

2023

Phys. Chem. Chem. Phys.

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“…Figure 4 shows the Raman spectrum of τ = 600 s etched SnOx films that shows different peaks, arises at ≈56 cm −1 , ≈87 cm −1 , ≈110 cm −1 , ≈136 cm −1 , ≈181 cm −1 , ≈233 cm −1 , ≈290 cm −1 , ≈356 cm −1 , ≈475 cm −1 , ≈556 cm −1 and ≈790 cm −1 , respectively. These peaks are assigned as Γ 3 -point photon modes of β-Sn (≈56 cm −1 ), Γ 5 -point photon modes of β-Sn (≈136 cm −1 ), Raman mode of SnO (un-passivated SnO → 87 cm −1 , A 1g → 181 cm −1 , E u → 233/290 cm −1 ) and Raman mode of SnO 2 (B 1g → 110 cm −1 , A 2g → 356 cm −1 , E g → 475 cm −1 , A 1g → 557 cm −1 , B 2g → 790 cm −1 ), respectively [20][21][22][23][24][25]. With increase of sputtering time τ = 1500 s, 3300 s, 3900 s (Fig.…”

Section: Articlementioning

confidence: 99%

Facile fabrication of defect-induced 2D-stanene/stanene-oxide nano-sheet structure material through etching of SnOx thin film by the process of successive Ar+ ion sputtering

Ray

2022

Journal of Materials Research

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In-situ Ar + -ion etching process is used to extract the defect-induced ultrathin 2D-stanene/stanene-oxide structured nano-materials from transparent conducting tin-dioxide (SnOx) thin films by KRATOS SUPRA spectrometer measurement system. In each etch-cycle during in situ successive Ar + -ion sputtering process, x-ray photoelectron (XPS) and ultraviolet photoemission spectroscopy (UPS) were measured and confirmed the formation of different crystal structures of defect-induced 2D-stanene and/or 2D-stanene oxide ultra-thin films. In situ XPS and UPS spectral results confirmed the formation of different defectinduced oxidation states of "Sn" and their change of density of states, valence band maximum and work functions of the extracted defect-induced ultra-thin 2D-stanene/stanene-oxide films. During etching process (τ etch = 0-4000 s) the thickness is changes from 200 nm (SnOx) → ≈2.5 nm (2D-Stanene). These results, further revealed with the ex-situ Raman spectra measurements, where we have observed that the 2D-stanene/stanene-oxide is extracted from SnOx thin films by this successive Ar + -ion etching process. This process provides an option to realize aggressively scaled nanostructure device-based 2D-stanene/ stanene-oxide materials with high-precision control that could be useful for fabrication of future electronic devices.

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Raman and photoacoustic spectroscopies of SnO2 thin films deposited by spin coating technique

Cited by 29 publications

References 35 publications

Investigating the structural, optical, and photocatalytic activity of TiO₂/SnO₂ nanocomposites synthesized by the facile sol-gel technique for dye degradation

Investigating the structural, optical, and photocatalytic activity of TiO₂/SnO₂ nanocomposites synthesized by the facile sol-gel technique for dye degradation

Hematite photoanodes for water splitting from directed assembly of Prussian blue onto CuO–Sb₂O₅–SnO₂ ceramics

Facile fabrication of defect-induced 2D-stanene/stanene-oxide nano-sheet structure material through etching of SnOx thin film by the process of successive Ar+ ion sputtering

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Raman and photoacoustic spectroscopies of SnO2 thin films deposited by spin coating technique

Cited by 29 publications

References 35 publications

Investigating the structural, optical, and photocatalytic activity of TiO2/SnO2 nanocomposites synthesized by the facile sol-gel technique for dye degradation

Investigating the structural, optical, and photocatalytic activity of TiO2/SnO2 nanocomposites synthesized by the facile sol-gel technique for dye degradation

Hematite photoanodes for water splitting from directed assembly of Prussian blue onto CuO–Sb2O5–SnO2 ceramics

Facile fabrication of defect-induced 2D-stanene/stanene-oxide nano-sheet structure material through etching of SnOx thin film by the process of successive Ar+ ion sputtering

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Investigating the structural, optical, and photocatalytic activity of TiO₂/SnO₂ nanocomposites synthesized by the facile sol-gel technique for dye degradation

Investigating the structural, optical, and photocatalytic activity of TiO₂/SnO₂ nanocomposites synthesized by the facile sol-gel technique for dye degradation

Hematite photoanodes for water splitting from directed assembly of Prussian blue onto CuO–Sb₂O₅–SnO₂ ceramics