Study on porphyrin/ZnFe2O4@polythiophene nanocomposite as a novel adsorbent and visible light driven photocatalyst for the removal of methylene blue and methyl orange

Kharazi, Parnian; Rahimi, Rahmatollah; Rabbani, Mahboubeh

doi:10.1016/j.materresbull.2018.03.031

Cited by 50 publications

(25 citation statements)

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“…The fragments on the surface of the diatom shell might originate from other diatom cells or the collapse of smaller shells. This typical porous structure has been reported as beneficial for its adsorption properties . AUTHOR: The roughness surface implies that Ag and ZnFe 2 O 4 particles were both well loaded on the surface of diatomite.…”

Section: Resultsmentioning

confidence: 89%

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Retracted: Visible‐light‐driven mitigation of antibiotic oxytetracycline and disinfection of Escherichia coli using magnetic recyclable Ag‐modified zinc ferrite/diatomite ternary hybrid material

Zhang

2019

J of Chemical Tech & Biotech

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BACKGROUND: The pharmaceutical residues in water are considered globally to be typical hazardous pollutants. Many technologies have been reported to eliminate these residues, such as photocatalysis, which has usually been applied in a suspension system with powdery photocatalyst. The disadvantage of this system, hindering its practical application, is its low recyclability. Ferrite-based photocatalysts have been synthesized to resolve this problem. In this work, silver (Ag)-modified zinc ferrite (ZnFe 2 O 4 ) nanoparticles were immobilized onto porous mineral diatomite. The physicochemical properties of this composite were studied systematically, and its photocatalytic efficiency was investigated via the degradation of antibiotic oxytetracycline (OTC) and disinfection of bacteria Escherichia coli under visible light. RESULTS:The degradation rate increased after the catalyst was immobilized onto diatomite, due to the adsorption and degradation synergistic effect. The Ag cluster improved the visible-light-driven photoactivity of ZnFe 2 O 4 , and its optimal percentage was determined. The best catalyst dosage during the degradation process also was obtained. The optimal catalyst exhibited its removal rate of OTC (10 mg L −1 aqueous solution) as 90.5% in 2.5 h, and disinfection rate of E. coli as 87.2% in 2 h, under visible light irradiation. Moreover, the photocatalysis mechanism was illustrated.CONCLUSION: This composite could be recovered simply from the water body via an external magnet, and indicated no obvious decrease of photoactivity after being recycled five times for photodegradation or photodisinfection tests. This nanocomposite showed good potential for application in wastewater remediation process, thanks to its high photocatalytic efficiency under visible light, as well as its good reusability and stability. REFERENCES1 Li N, Ho KWK, Ying GG and Deng WJ, Veterinary antibiotics in food, drinking water, and the urine of preschool children in Hong Kong.

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Section: Resultsmentioning

confidence: 89%

“…Figure (c) shows the XPS spectrum of Fe ion. The peaks of the Fe ion spectrum located at 725.8 and 712.3 eV were attributed to orbitals Fe 2p 1/2 and Fe 2p 3/2 , meaning that Fe exists as Fe 3+ …”

Section: Resultsmentioning

confidence: 99%

Retracted: Visible‐light‐driven mitigation of antibiotic oxytetracycline and disinfection of Escherichia coli using magnetic recyclable Ag‐modified zinc ferrite/diatomite ternary hybrid material

Zhang

2019

J of Chemical Tech & Biotech

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“…The diffraction peaks of pure ZnFe 2 O 4 located at 2θ=18.2°, 29.9°, 35.1°, 36.7°, 42.7°, 53.1°, 56.6°and 61.1°can be indexed to (1 1 1), (2 2 0), (3 1 1), (2 2 2), (4 0 0), (4 2 2), (5 1 1 ) and (4 4 0) crystal planes (shown in figure 1(b)), which are coincident with the cubic spinel structure of ZnFe 2 O 4 (JCPDS No. 22-1012) [26,27]. As for In 2 S 3 /ZnFe 2 O 4 nanocomposites, there are both ZnFe 2 O 4 and In 2 S 3 phases to be observed (displayed in figures 1(c)-(e)).…”

Section: Resultsmentioning

confidence: 92%

“…Notably, magnetic complex oxides zinc ferrite (ZnFe 2 O 4 ), with an energy band gap of about 1.9 eV, is of special interest due to its outstanding electromagnetic behavior, chemical and physical stability, as well as excellent optical characteristics [22][23][24]. Previously, several studies have showed that ZnFe 2 O 4 can be combined with other materials to enhance photocatalytic activities [25][26][27]. Undoubtedly, various ZnFe 2 O 4 -based composites will be intriguing materials for the degradation of organic pollutants in the practical usage stemming from their magnetic and separable properties.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of magnetic and recyclable In₂S₃/ZnFe₂O₄ nanocomposites for visible light photocatalytic activity enhancement

Zhao

Huang

et al. 2020

Mater. Res. Express

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In this work, magnetic In 2 S 3 /ZnFe 2 O 4 nanocomposites were fabricated via a two-step solvothermal process, which In 2 S 3 loading amount on ZnFe 2 O 4 support medium could be controlled by changing reaction mass. Investigation revealed that the photocatalytic activity of In 2 S 3 /ZnFe 2 O 4 nanocomposites was uperior to pure In 2 S 3 and ZnFe 2 O 4 for the degradation of MB driven by visible light. The improved photocatalytic activity may be stemming from the synergy effect of In 2 S 3 and ZnFe 2 O 4 , resulting in the enhanced visible light absorbance and higher separation efficiency of the photo-generated charge carriers. Significantly, this sort of nanocomposites could rapidly be separated through an external magnetic field, and five successive cycle experiments have proved that it was stable and recyclable. Finally, a possible mechanism related to the separation of charge and photocatalytic decomposition of MB was also provided.

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“…This indicates desirability of the ultrasonic method for adhering Pd NPs on the surface of zeolite. Also, the average crystallite size of the as prepared Pd nanoparticles were calculated by the Scherer formula: D = 0.9λ/(β cos θ), where D represents the crystallite size (nm), β is the full width of the diffraction line at half the maximum intensity, λ represents the wavelength of X‐ray and θ is the Bragg angle . The average crystallite size of about 7 nm obtained for the prepared product using XRD pattern and Debye–Scherrer equation.…”

Section: Resultsmentioning

confidence: 99%

Green synthesis and characterization of palladium nanoparticles supported on zeolite Y by sonochemical method, powerful and efficient catalyst for Suzuki‐Miyaura coupling of aryl halides with phenylboronic acid

Tadjarodi

Dehghani

Imani

2018

Applied Organom Chemis

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In this paper, we report effective, useful and environmental compatible ultrasound method for the synthesis of zeolite-Y. Then, the prepared product was composed with palladium nanoparticles by sonication treatment. The prepared zeolite Y-Pd nanoparticles was used as catalyst in Suzuki-Miyaura coupling of aryl halides (Ar-X, X = I, Br, Cl, F) with phenylboronic acid. Based on our studies, the prepared zeolite Y-Palladium nanoparticles revealed a high catalytic performance in Suzuki-Miyaura coupling reaction so that aryl fluoride can even react with phenylboronic acid by utilizing this catalyst. The advantages of the use of this catalyst in Suzuki-Miyaura coupling reaction are green solvent, short reaction time, high yields, ligandless and recyclable. Structure and morphology of the synthesized zeolite-Y and zeolite-Y-Palladium nanoparticles were characterized by FT-IR (Fourier transform infrared), XRD (X-ray diffraction), SEM (Scanning electron microscopy), TEM (Transmission electron microscopy), EDX (Energy dispersive analysis of X-ray), BET (Brunauer Emmett Teller) and ICP-MS (Inductively coupled plasma mass spectrometry).

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Study on porphyrin/ZnFe2O4@polythiophene nanocomposite as a novel adsorbent and visible light driven photocatalyst for the removal of methylene blue and methyl orange

Cited by 50 publications

References 31 publications

Retracted: Visible‐light‐driven mitigation of antibiotic oxytetracycline and disinfection of Escherichia coli using magnetic recyclable Ag‐modified zinc ferrite/diatomite ternary hybrid material

Retracted: Visible‐light‐driven mitigation of antibiotic oxytetracycline and disinfection of Escherichia coli using magnetic recyclable Ag‐modified zinc ferrite/diatomite ternary hybrid material

Fabrication of magnetic and recyclable In₂S₃/ZnFe₂O₄ nanocomposites for visible light photocatalytic activity enhancement

Green synthesis and characterization of palladium nanoparticles supported on zeolite Y by sonochemical method, powerful and efficient catalyst for Suzuki‐Miyaura coupling of aryl halides with phenylboronic acid

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Study on porphyrin/ZnFe2O4@polythiophene nanocomposite as a novel adsorbent and visible light driven photocatalyst for the removal of methylene blue and methyl orange

Cited by 50 publications

References 31 publications

Retracted: Visible‐light‐driven mitigation of antibiotic oxytetracycline and disinfection of Escherichia coli using magnetic recyclable Ag‐modified zinc ferrite/diatomite ternary hybrid material

Retracted: Visible‐light‐driven mitigation of antibiotic oxytetracycline and disinfection of Escherichia coli using magnetic recyclable Ag‐modified zinc ferrite/diatomite ternary hybrid material

Fabrication of magnetic and recyclable In2S3/ZnFe2O4 nanocomposites for visible light photocatalytic activity enhancement

Green synthesis and characterization of palladium nanoparticles supported on zeolite Y by sonochemical method, powerful and efficient catalyst for Suzuki‐Miyaura coupling of aryl halides with phenylboronic acid

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Fabrication of magnetic and recyclable In₂S₃/ZnFe₂O₄ nanocomposites for visible light photocatalytic activity enhancement