Simple synthesis and characterization of SrSnO3 nanoparticles with enhanced photocatalytic activity

Lee, Chan Woo; Kim, Dong Wook; Cho, In Sun; Park, Sangbaek; Shin, Seong Sik; Seo, Se Won; Hong, Kug Sun

doi:10.1016/j.ijhydene.2012.04.063

Cited by 80 publications

(52 citation statements)

References 34 publications

(27 reference statements)

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“…The band at 410 nm is characteristic of the azo group [45] responsible for the color of the dye [46]. The intensity of this band decreased after photocatalytic treatment in the presence of the perovskite, which indicated that discoloration occurred [10,44,47]. The results presented in Fig.…”

Section: Photocatalytic Testsmentioning

confidence: 93%

Sr1−xBaxSnO3 system applied in the photocatalytic discoloration of an azo-dye

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et al. 2014

Solid State Sciences

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Semiconductor materials have received substantial attention as photocatalysts for controlling water pollution. Among these materials, perovskite-structured SrSnO 3 is a promising candidate for this application, whereas BaSnO 3 exhibits very low activity. In the present work, Sr 1-x Ba x SnO 3 (x = 0, 0.25, 0.50, 0.75 and 1) was synthesized by solid-state reaction and was applied in the photocatalytic discoloration of the organic dye Remazol Golden Yellow. The perovskite structure was obtained for all compositions of the solid solutions with both Sr The two materials appear to feature different mechanisms of photodegradation: the direct mechanism prevails in the case of BaSnO 3 , whereas the indirect mechanism appears to play a key role in the case of SrSnO 3 .

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Section: Photocatalytic Testsmentioning

confidence: 93%

Sr1−xBaxSnO3 system applied in the photocatalytic discoloration of an azo-dye

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Bouquet

Députier

et al. 2014

Solid State Sciences

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“…ABO 3 perovskite has been used for energy conversion, lithium ion batteries, stable capacitors, oxygen-permeable ceramic membranes, and gas sensors [1][2][3][4]. In recent years, SrSnO 3 has been widely used in photocatalytic applications [4][5][6]. Development of semiconductors to enhance photocatalytic activity by being deposited with noble transition metals like Ag, Au, Pt, and Ir has been intensively investigated.…”

Section: Introductionmentioning

confidence: 99%

Decolorization of Methylene Blue by Ag/SrSnO₃ Composites under Ultraviolet Radiation

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Thongtem

et al. 2014

Journal of Nanomaterials

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SrSn(OH)6 precursors synthesized by a cyclic microwave radiation (CMR) process were calcined at 900°C for 3 h to form rod-like SrSnO3. Further, the rod-like SrSnO3 and AgNO3 in ethylene glycol (EG) were ultrasonically vibrated to form rod-like Ag/SrSnO3 composites, characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron microscopy (EM), Fourier transform infrared (FTIR) spectroscopy, and UV-visible analysis. The photocatalyses of rod-like SrSnO3, 1 wt%, 5 wt%, and 10 wt% Ag/SrSnO3 composites were studied for degradation of methylene blue (MB, C16H18N3SCl) dye under ultraviolet (UV) radiation. In this research, the 5 wt% Ag/SrSnO3 composites showed the highest activity, enhanced by the electron-hole separation process. The photoactivity became lower by the excessive Ag nanoparticles due to the negative effect caused by reduction in the absorption of UV radiation.

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“…As shown in Figure 12 SnÀOÀSn bonds becomei ncreasingly linear,t he conduction band will be expanded,a nd the band-gap curves will correspondingly decrease. [5] Furthermore, the band gaps found for SrSnO 3 and BaSnO 3 ( Table 2) are lower than those reported for SrSnO 3 prepared through as olid-state reaction (4.1 eV) [34] or by am icrowaveassisted hydrothermalm ethod( 4.27 eV) [19] and for BaSnO 3 synthesized by am icrowave-assisted hydrothermalm ethod (4.5 eV). [8] However,t he band gap of the BaSnO 3 sample is equal to the value reported for BaSnO 3 prepared by as olidstate reaction (3.1 eV).…”

Section: Resultsmentioning

confidence: 64%

Ionic‐Liquid‐Assisted Microwave Synthesis of Solid Solutions of Sr_1−xBa_xSnO₃ Perovskite for Photocatalytic Applications

et al. 2017

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Nanocrystalline Sr1−xBaxSnO3 (x=0, 0.2, 0.4, 0.8, 1) perovskite photocatalysts were prepared by microwave synthesis in an ionic liquid (IL) and subsequent heat‐treatment. The influence of the Sr/Ba substitution on the structure, crystallization, morphology, and photocatalytic efficiency was investigated and the samples were fully characterized. On the basis of X‐ray diffraction results, as the Ba content in the SrSnO3 lattice increases, a symmetry increase was observed from the orthorhombic perovskite structure for SrSnO3 to the cubic BaSnO3 structure. The analysis of the sample morphology by SEM reveals that the Sr1−xBaxSnO3 samples favor the formation of nanorods (500 nm–5 μm in diameter and several micrometers long). The photophysical properties were examined by UV/Vis diffuse reflectance spectroscopy. The band gap decreases from 3.85 to 3.19 eV with increasing Ba2+ content. Furthermore, the photocatalytic properties were evaluated for the hydroxylation of terephthalic acid (TA). The order of the activities for TA hydroxylation was Sr0.8Ba0.2SnO3>SrSnO3>BaSnO3>Sr0.6Ba0.4SnO3>Sr0.2Ba0.8SnO3. The highest photocatalytic activity was observed for Sr0.8Ba0.2SnO3, and this can be attributed to the synergistic impacts of the modification of the crystal structure and morphology, the relatively large surface area associated with the small crystallite size, and the suitable band gap and band‐edge position.

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Simple synthesis and characterization of SrSnO3 nanoparticles with enhanced photocatalytic activity

Cited by 80 publications

References 34 publications

Sr1−xBaxSnO3 system applied in the photocatalytic discoloration of an azo-dye

Sr1−xBaxSnO3 system applied in the photocatalytic discoloration of an azo-dye

Decolorization of Methylene Blue by Ag/SrSnO₃ Composites under Ultraviolet Radiation

Ionic‐Liquid‐Assisted Microwave Synthesis of Solid Solutions of Sr_1−xBa_xSnO₃ Perovskite for Photocatalytic Applications

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Simple synthesis and characterization of SrSnO3 nanoparticles with enhanced photocatalytic activity

Cited by 80 publications

References 34 publications

Sr1−xBaxSnO3 system applied in the photocatalytic discoloration of an azo-dye

Sr1−xBaxSnO3 system applied in the photocatalytic discoloration of an azo-dye

Decolorization of Methylene Blue by Ag/SrSnO3 Composites under Ultraviolet Radiation

Ionic‐Liquid‐Assisted Microwave Synthesis of Solid Solutions of Sr1−xBaxSnO3 Perovskite for Photocatalytic Applications

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Decolorization of Methylene Blue by Ag/SrSnO₃ Composites under Ultraviolet Radiation

Ionic‐Liquid‐Assisted Microwave Synthesis of Solid Solutions of Sr_1−xBa_xSnO₃ Perovskite for Photocatalytic Applications