New controllable procedure for preparation of SrSnO3 nanostructures: photo-degradation of azo dyes and photovoltaic measurement

Moshtaghi, Saeed; Gholamrezaei, Sousan; Niasari, M Salavati; Mehdizadeh, Pourya

doi:10.1007/s10854-015-3769-6

Cited by 20 publications

(14 citation statements)

References 36 publications

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“…For instance, Sales et al [15] synthesized Sr 1-x Ba x SnO 3 powders and observed that the photodegradation of remazol golden yellow is strongly influenced by the composition of the photocatalyst. In a recent study, Moshtaghi et al [16] investigated the photodegradation of acid blue 92 and acid black 1 using SrSnO 3 as the photocatalyst and obtained discoloration percentages larger than 93%. Wang et al [17] evaluated the use CaSnO 3 with microcube morphology for the photodegradation of rhodamine B, methyl orange and 4-hydroxyazobenzene dyes and observed high photocatalytic efficiency.…”

Section: Introductionmentioning

confidence: 99%

CaSnO 3 obtained by modified Pechini method applied in the photocatalytic degradation of an azo dye

et al. 2017

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Pure forms of alkaline-earth stannates with perovskite structure (ASnO 3 , A= Ca ) have been used as photocatalysts. In this work, CaSnO 3 perovskite sample was synthesized by a modified Pechini method at 800 ºC and characterized by X-ray diffraction (XRD), UV-visible spectroscopy, infrared spectroscopy and Raman spectroscopy. The photocatalytic degradation of remazol golden yellow (RNL) dye under UV radiation was evaluated. The XRD pattern showed that the synthesis method favored the orthorhombic CaSnO 3 crystallization. According to the Raman spectrum, a material with high short-range order was obtained despite of the relatively low synthesis temperature, compared to the solid-state reaction one. The highest photocatalytic activity was attained at pH 3, which presented 51% discoloration and improved activity of 35% compared to discoloration solely due to adsorption (absence of radiation). The point of zero charge (PZC) and the photocatalytic results indicated that a direct mechanism prevailed at pH 3, whereas an indirect mechanism prevailed at pH 6.

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Section: Introductionmentioning

confidence: 99%

CaSnO 3 obtained by modified Pechini method applied in the photocatalytic degradation of an azo dye

et al. 2017

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“…[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). [35] The band-edgep ositionc an be calculated according to the method of Butler and Ginley[Eq.…”

Section: Resultsmentioning

confidence: 99%

“…[7] Moshtaghi et al prepared SrSnO 3 through coprecipitation with bis(salicylaldehydato)strontium as the precursor at 900 8C. [8] Wang et al reported the preparation of SrSnO 3 by ac ombustion method at 1000 8C, [9] and Chen et al synthesized SrSnO 3 by calcination of the hydrothermally prepared SrSn(OH) 6 at 1100 8C. [10] However,a ll of these methods requiree levated temperatures, relativelyl ong reaction times, additional cappinga gents, and sometimes expensive and quite toxic raw materials including volatile compounds as startingmaterials.…”

Section: Introductionmentioning

confidence: 99%

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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“…Wang et al [86] synthesized CaSnO 3 by co-precipitation and obtained 94% of degradation for methylene blue after 100 min of irradiation. SrSnO 3 was evaluated for dye degradation in the pure form [16,55], doped with nitrogen [53] and combined with Ag as co-catalyst [57]. Concerning the pure material, SrSnO 3 was synthesized by the hydrothermal [16] and coprecipitation [55] methods.…”

Section: [Figura 2: Diagrama De Bandas De Um Semicondutor Com Formaçãmentioning

confidence: 99%

“…SrSnO 3 was evaluated for dye degradation in the pure form [16,55], doped with nitrogen [53] and combined with Ag as co-catalyst [57]. Concerning the pure material, SrSnO 3 was synthesized by the hydrothermal [16] and coprecipitation [55] methods. Junploy et al [16] used rod-like SrSnO 3 for the degradation of methylene blue under UV irradiation and obtained a discoloration amount of 85% after 320 min.…”

Section: [Figura 2: Diagrama De Bandas De Um Semicondutor Com Formaçãmentioning

confidence: 99%

Alkaline earth stannates applied in photocatalysis: prospection and review of literature

et al. 2018

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The ABO 3 mixed oxide class known for its perovskite-like structure has aroused great scientific and technological interest in recent decades, due to its optical, magnetic and conductive properties. The objective of this work was to search the articles and patent databases for papers that relate the activity of the alkaline earth metal stannates -BaSnO 3 , CaSnO 3 and SrSnO 3 as photocatalysts for environmental application. The databases researched were the Web of Science, Scopus and Scielo for articles and USPTO, EPO and INPI for patent banks. From the exclusion criteria, 21 review articles presented different experimental parameters and conditions. Due to the excellent photocatalytic performance, the stannates presented as promising candidates in the heterogeneous photocatalysis. A description of the main papers published in literature is provided for an overview of the literature data about these materials.A classe de óxidos mistos ABO 3 conhecida por sua estrutura do tipo perovskita vêm despertando grande interesse científicotecnológico nas últimas décadas, em função de suas propriedades ópticas, magnéticas e condutoras. Este trabalho teve por objetivo buscar, nos bancos de artigos e de patentes, trabalhos que relacionem a atividade fotocatalítica dos estanatos de metais alcalinos terrosos -BaSnO 3 , CaSnO 3 e SrSnO 3 como fotocatalisadores para aplicação ambiental. Os bancos de dados pesquisados foram o Web of Science, Scopus e Scielo para os artigos e USPTO, EPO e INPI para os bancos de patentes. A partir dos critérios de exclusão, 21 artigos de revisão apresentaram parâmetros e condições experimentais distintas. Devido ao excelente desempenho fotocatalítico, os estanatos apresentam-se como candidatos promissores na fotocatálise heterogênea. Palavras-chave: estanatos, perovskita, fotocatálise. *ieda@quimica.ufpb.br

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New controllable procedure for preparation of SrSnO3 nanostructures: photo-degradation of azo dyes and photovoltaic measurement

Cited by 20 publications

References 36 publications

CaSnO 3 obtained by modified Pechini method applied in the photocatalytic degradation of an azo dye

CaSnO 3 obtained by modified Pechini method applied in the photocatalytic degradation of an azo dye

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

Alkaline earth stannates applied in photocatalysis: prospection and review of literature

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New controllable procedure for preparation of SrSnO3 nanostructures: photo-degradation of azo dyes and photovoltaic measurement

Cited by 20 publications

References 36 publications

CaSnO 3 obtained by modified Pechini method applied in the photocatalytic degradation of an azo dye

CaSnO 3 obtained by modified Pechini method applied in the photocatalytic degradation of an azo dye

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

Alkaline earth stannates applied in photocatalysis: prospection and review of literature

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