Synthesis of ternary zinc spinel oxides and their application in the photodegradation of organic pollutant

Anchieta, Chayene G.; Sallet, Daniela; Foletto, Edson Luiz; Silva, Syllos S. da; Chiavone‐Filho, Osvaldo; Nascimento, Cláudio Augusto Oller do

doi:10.1016/j.ceramint.2013.08.074

Cited by 79 publications

(41 citation statements)

References 27 publications

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“…Compared with pure oxides the complex oxides like Zn 2 SnO 4 are chemically more stable, making them ideal for applications involving extreme conditions [17]. Literature data reported that the formation temperature of the Zn 2 SnO 4 compound strongly depends on the preparation method [20,21]. Nikolic et al [22] reported the obtaining of Zn 2 SnO 4 compound both by mechano-chemical synthesis route in a planetary ball mill for times longer than 160 min or by mechanical activation for more than 10 min and sintering the pre-activated sample at temperatures higher than 1173 K.…”

Section: Introductionmentioning

confidence: 99%

Advanced ceramics in the SnO2–ZnO binary system

Mihaiu¹,

Toader²,

Atkinson³

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Advanced ceramics in the SnO2–ZnO binary system

Mihaiu¹,

Toader²,

Atkinson³

et al. 2015

Ceramics International

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“…The photocatalytic activity of ZnFe 2 O 4 with 1.9 eV band gap (Xie et al 2012) was tested for degradation of phenol under solar light and artificial UV irradiation, while BiFeO 3 activity was investigated in the decomposition of MO irradiating with UV and visible light lamp. Both catalysts showed an efficient photocatalytic activity only under ultraviolet light (Anchieta et al 2014;Liu et al 2010 Oxysulfides, oxyhalides, and oxynitrides can induce a significant increase in visible light absorption. As an example, tantalum oxynitride (TaON) exhibits a narrow band gap of 2.5 eV and an absorption edge that is redshifted by 170 nm compared with Ta 2 O 5 .…”

Section: Ternary Compoundsmentioning

confidence: 99%

Semiconducting Materials

Hernández-Ramírez¹,

Medina-Ramírez²

2014

Photocatalytic Semiconductors

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Semiconducting materials are of great technological importance in electronics industry and environmental remediation due to their ability to generate charge carriers when activated with certain energy. The favorable combination of electronic structure, light absorption properties, charge transport characteristics, and excited lifetimes of some semiconductors has made possible its application as photocatalyst. Although many publications define the fundamental aspects of the semiconductors from different points of view, in this chapter the definition of photocatalytic semiconductor, its structural characteristics, and the requirements to be used as photocatalyst are briefly recalled. In addition, the classification of photocatalytic materials and the mechanism of the photocatalytic process are also reviewed. The advantages and disadvantages of the most used photocatalyst TiO 2 and the second-generation TiO 2 -based materials are also addressed.

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“…1(a) [35,36]. Nitrogen adsorption-desorption isotherms of ZnFe 2 O 4 sample and its pore size distribution curve are shown in Fig.…”

Section: Characterization Of Znfe 2 O 4 Oxidementioning

confidence: 99%

Statistical optimization of Reactive Red 141 removal by heterogeneous photo–Fenton reaction using ZnFe2O4 oxide prepared by microwave irradiation

Anchieta

Dotto

Mazutti

et al. 2016

Desalination and Water Treatment

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A B S T R A C TA statistical optimization of Reactive Red 141 (RR141) removal by heterogeneous photoFenton reaction using ZnFe 2 O 4 particles was performed. ZnFe 2 O 4 oxide was synthesized by microwave-assisted solvothermal route and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and N 2 adsorption-desorption isotherms. This material was used as a catalyst for the removal of RR141 dye from aqueous solution. Statistical optimization for the RR141 removal was performed using a 2 4−1 fractional experimental design, followed by the response surface methodology. Effects of pH, reaction time, dye concentration, and H 2 O 2 concentration were evaluated. ZnFe 2 O 4 particles presented a mesoporous structure with surface area of 65 m 2 g −1 . It was found that the more adequate conditions for the RR141 dye removal were pH 2.0, reaction time of 60 min, dye concentration of 60 mg L −1 , and H 2 O 2 concentration of 10 mM. In these conditions, 90% of color removal was achieved. The results demonstrate that the ZnFe 2 O 4 oxide is an efficient catalyst for the removal of RR141dye from aqueous solution through the heterogeneous photo-Fenton reaction.

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Synthesis of ternary zinc spinel oxides and their application in the photodegradation of organic pollutant

Cited by 79 publications

References 27 publications

Advanced ceramics in the SnO2–ZnO binary system

Advanced ceramics in the SnO2–ZnO binary system

Semiconducting Materials

Statistical optimization of Reactive Red 141 removal by heterogeneous photo–Fenton reaction using ZnFe2O4 oxide prepared by microwave irradiation

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