Photoabsorption and photocatalysis of SrSnO3 produced by a cyclic microwave radiation

Junploy, Patcharanan; Thongtem, Somchai; Thongtem, Titipun

doi:10.1016/j.spmi.2013.01.008

Cited by 56 publications

(32 citation statements)

References 18 publications

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“…The use of these materials for photocatalytic water splitting is well known [14,15]. Nonetheless, the literature contains very few studies on the use of perovskitestructured stannates for the photodegradation of organic dyes, although SrSnO 3 has been synthesized by cyclic microwave radiation and used in the photocatalytic decolorization of methylene blue with high efficiency [16].…”

Section: Pbnmmentioning

confidence: 99%

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

Sales

Bouquet

Députier

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: Pbnmmentioning

confidence: 99%

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

Sales

Bouquet

Députier

et al. 2014

Solid State Sciences

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“…CaSnO 3 has been received increasing attention due to applications as capacitor component [2], gas sensor [3], anode materials for lithium ion batteries [4], catalyst [5], and photocatalyst [6]. Heterogeneous photocatalysis is an effective method for wastewater treatment, especially when organic pollutants are present in aqueous media [7][8][9]. In the photocatalytic process, a semiconductor is used as a light absorber to promote the breakage of pollutant molecules.…”

Section: Introductionmentioning

confidence: 99%

“…A high activity in the degradation of organic pollutants has been reported for alkaline earth stannates as a consequence of their dielectric semiconductor properties [9,11,12]. Some of these works reported the use of alkaline earth stannates in water splitting [5,13,14], whereas others applied these materials for dye photodegradation, [9,12].…”

Section: Introductionmentioning

confidence: 99%

“…Some of these works reported the use of alkaline earth stannates in water splitting [5,13,14], whereas others applied these materials for dye photodegradation, [9,12]. 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.…”

Section: Introductionmentioning

confidence: 99%

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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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“…Especially, their high performances in photocatalytic reactions, such as overall water splitting and photo degradation of organic pollutants, attracted much attention because of their narrower band gap (often less than 3.0 eV) which could be easily excited under visible light or ultraviolet light irradiation [22]. As a photocatalyst, perovskites, such as SrSnO 3 [23], SrTiO 3 [24] and LaTiO 3 [25], have been extensively studied in the field of photo degradation of organic pollutants. Double-perovskite oxides which named after perovskites ABO 3 are a large family and have wide application fields.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Photocatalytic Properties of LnBaCo<SUB>2</SUB>O<SUB>5+δ</SUB> (Ln = Eu, Gd, and Sm)

Han¹,

Li²,

Chen³

et al. 2015

MSCE

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A new type of photocatalytic material, double-perovskite oxides, LnBaCo2O5+δ (Ln = Eu, Gd, and Sm) was synthesized via a conventional solid-state reaction process using Ln2O3, BaCO3 and Co2O3 as raw materials. X-ray diffraction results show that the crystalline structures are a pure orthorhombic lattice and are consistent with LnBaCo2O5+δ microparticles. The photocatalytic activity of the LnBaCo2O5+δ (Ln = Eu, Gd, and Sm) powders was further demonstrated in the degradation of Congo red (CR) under ultraviolet light irradiation with the dye solution concentration of 25 or 50 mg•L −1 . The double-perovskite oxides LnBaCo2O5+δ show a certain photocatalytic activity during the degradation of CR under ultraviolet light, which means that they are one kind of the promising photocatalytic materials for the degradation of the azo dyes.

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Photoabsorption and photocatalysis of SrSnO3 produced by a cyclic microwave radiation

Cited by 56 publications

References 18 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

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

Preparation and Photocatalytic Properties of LnBaCo<SUB>2</SUB>O<SUB>5+δ</SUB> (Ln = Eu, Gd, and Sm)

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Photoabsorption and photocatalysis of SrSnO3 produced by a cyclic microwave radiation

Cited by 56 publications

References 18 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

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

Preparation and Photocatalytic Properties of LnBaCo&lt;SUB&gt;2&lt;/SUB&gt;O&lt;SUB&gt;5+δ&lt;/SUB&gt; (Ln = Eu, Gd, and Sm)

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Preparation and Photocatalytic Properties of LnBaCo<SUB>2</SUB>O<SUB>5+δ</SUB> (Ln = Eu, Gd, and Sm)