Efficient degradation of azo dye pollutants on ZnBi38O58 nanostructures under visible-light irradiation

Najafian, Hassan; Manteghi, Faranak; Beshkar, Farshad; Salavati‐Niasari, Masoud

doi:10.1016/j.seppur.2017.11.076

Cited by 35 publications

(4 citation statements)

References 31 publications

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“…The quantity of energy gap (E g ) of sample no. 6 determined considering Taucs equation . According to this equation, the energy gap value of magnetic nanocomposites is 2.71 eV.…”

Section: Resultsmentioning

confidence: 99%

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Shirzadi‐Ahodashti

Ebrahimzadeh

Ghoreishi

et al. 2020

Applied Organom Chemis

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The purpose of this research is to prepare novel, inexpensive, eco‐friendly and efficient magnetic nanocomposites for degradation of pollutant from wastewater and their potential antibacterial activity. To reach this goal, we have synthesized magnetic MnFe2O4@SiO2@Au (MnFe@Si@Au) nanocomposites through ultrasound assisted co‐precipitation technique in presence of carbohydrate and Crataegus fruits extract, for the first time. The influence of capping agents including sucrose, glucose, PVA and reducing agents such as C. microphylla and C. pentagyna on the morphology, size, purity, photocatalytic and antibacterial behavior of magnetic nanocomposites were investigated. The FT‐IR, XRD, VSM, EDS, FE‐SEM, TEM and BET analysis were performed to confirm the formation of magnetic nanocomposites. MnFe@Si@Au nanocomposites have shown promising potential in degradation of organic contaminants including rhodamine b (RhB), 2‐naphthol (2‐NPH), methyl violet (MV), erythrosine (ER) and eriochrome black T (EBT) under both radiation conditions. The results show that degradation of the anionic contaminants is more than cationic contaminants under UV and visible irradiations. As well as, these synthesized spherical MnFe@Si@Au nanocomposites show excellent antibacterial activities against P. aeruginosa, K. pneumoniae and P. mirabilis bacteria. In addition to the features mentioned, another prominent feature of this nanocatalyst is retaining their photocatalytic activity after five cycles of utilization.

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“…The quantity of energy gap (E g ) of sample no. 6 determined considering Taucs equation . According to this equation, the energy gap value of magnetic nanocomposites is 2.71 eV.…”

Section: Resultsmentioning

confidence: 99%

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Shirzadi‐Ahodashti

Ebrahimzadeh

Ghoreishi

et al. 2020

Applied Organom Chemis

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“…Different techniques are used to remove amido black from water. These include adsorption, electrochemical process, photodegradation, ultrafiltration, reverse osmosis, coagulation and biochemical process (18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35). It is observed that these methods have certain limitations like not fast, which cannot be used at a large scale.…”

Section: Introductionmentioning

confidence: 99%

Kinetics, Thermodynamics, and Modeling of Amido Black Dye Photodegradation in Water Using Co/TiO₂ Nanoparticles

Ali

Alharbi

ALOthman

et al. 2018

Photochem & Photobiology

174

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Titanium oxide nanoparticles were doped with copper and characterized by XRD, FT-IR, TEM, and SEM. The surface morphology was spherical with 15-26 nm as particle size. The doped titanium oxide (Co/TiO ) nanomaterial was used for photodegradation of amido black dye in water. The maximum photodegradation of amido black obtained was 90%. The values of free energy and enthalpy were negative, indicating spontaneous photodegradation of amido black dye. The photodegradation of amido black dye obeyed first-order kinetic model. The photodegradation mechanism of amido black involved adsorption of the dye on the surface of cobalt doped titanium oxide and its degradation under UV radiation. The electron (e ) and hole (h ) pairs were generated by Co/TiO , which consequently generated superoxide oxygen anion and hydroxyl free radical. These species degraded amido black dye. The reported method was fast, effective, and economic, which may be utilized to remove amido black in water. The doped TiO catalyst was quite stable and can be used up to 5 cycles.

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“…Antibiotic pollutants arising from pharmaceutical wastewater have become a global environmental problem, which can seriously affect human health. − Since most of the antibiotic compounds owing to their intricate structures and intrinsic persistence cannot be degraded by conventional treatment approaches, various advanced oxidation processes have been developed. − In recent years, the photocatalytic oxidation procedures, due to their advantages such as sunlight-driven, high-performance, retrievability, eco-friendly, affordable, and nontoxicity, have been highly regarded for the elimination of antibiotic contaminants from environmental wastewaters. − Since sunlight consists of 5% ultraviolet, 48% visible, and 47% infrared parts, the production of efficient photocatalysts that can absorb all spectrums of sunlight, especially visible and infrared lights, is very valuable for solar photocatalytic applications …”

Section: Introductionmentioning

confidence: 99%

Facile One-Pot In Situ Synthesis and Characterization of a Cu₂O/Cu₂(PO₄)(OH) Binary Heterojunction Nanocomposite for the Efficient Photocatalytic Degradation of Ciprofloxacin from Aqueous Solution under Direct Sunlight Irradiation

Beshkar

Salavati‐Niasari

Amiri

2021

Ind. Eng. Chem. Res.

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Antibiotic-containing wastewater as a dangerous factor for human health must be effectively removed from the environment. In this work, we fabricated a novel full-spectrum solar-driven Cu 2 O/ Cu 2 (PO 4 )(OH) heterojunction nanocomposite with the outstanding photocatalytic degradation performance of ciprofloxacin (CP) antibiotic under direct sunlight irradiation. The hierarchical cactus-like Cu 2 O/Cu 2 (PO 4 )(OH) structures were prepared by a simple reflux route at 100 °C for 3 h. When Cu 2 O/Cu 2 (PO 4 )(OH) photocatalysts with a band gap energy of 2.26 eV were applied for the degradation of CP antibiotic, a high photodegradation efficiency (∼98%) was obtained after 2 h of sunlight irradiation, which was higher than individual Cu 2 O (48%) and Cu 2 (PO 4 )(OH) (74%). The excellent photocatalytic activity of the Cu 2 O/Cu 2 (PO 4 )(OH) photocatalyst can be mainly attributed to the unique hierarchical morphology, promoted visible-near infrared absorption, high separation, and low recombination rate of electron−hole pairs originated from the as-formed heterojunction structures. In addition, we suggested an advisable photocatalytic degradation mechanism based on the radical trapping trial, which disclosed that the hydroxyl ( • OH) and hole (h + ) species have a fundamental responsibility for the photocatalytic degradation of CP over Cu 2 O/Cu 2 (PO 4 )(OH) nanocomposites.

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Efficient degradation of azo dye pollutants on ZnBi38O58 nanostructures under visible-light irradiation

Cited by 35 publications

References 31 publications

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Kinetics, Thermodynamics, and Modeling of Amido Black Dye Photodegradation in Water Using Co/TiO₂ Nanoparticles

Facile One-Pot In Situ Synthesis and Characterization of a Cu₂O/Cu₂(PO₄)(OH) Binary Heterojunction Nanocomposite for the Efficient Photocatalytic Degradation of Ciprofloxacin from Aqueous Solution under Direct Sunlight Irradiation

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Efficient degradation of azo dye pollutants on ZnBi38O58 nanostructures under visible-light irradiation

Cited by 35 publications

References 31 publications

Facile and eco‐benign synthesis of a novel MnFe2O4@SiO2@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Facile and eco‐benign synthesis of a novel MnFe2O4@SiO2@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Kinetics, Thermodynamics, and Modeling of Amido Black Dye Photodegradation in Water Using Co/TiO2 Nanoparticles

Facile One-Pot In Situ Synthesis and Characterization of a Cu2O/Cu2(PO4)(OH) Binary Heterojunction Nanocomposite for the Efficient Photocatalytic Degradation of Ciprofloxacin from Aqueous Solution under Direct Sunlight Irradiation

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Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Facile and eco‐benign synthesis of a novel MnFe₂O₄@SiO₂@Au magnetic nanocomposite with antibacterial properties and enhanced photocatalytic activity under UV and visible‐light irradiations

Kinetics, Thermodynamics, and Modeling of Amido Black Dye Photodegradation in Water Using Co/TiO₂ Nanoparticles

Facile One-Pot In Situ Synthesis and Characterization of a Cu₂O/Cu₂(PO₄)(OH) Binary Heterojunction Nanocomposite for the Efficient Photocatalytic Degradation of Ciprofloxacin from Aqueous Solution under Direct Sunlight Irradiation