Wet-chemical synthesis of nanostructured Ce-doped mixed metal ferrites for the effective removal of azo dyes from industrial discharges

Kousar, Tehmina; Aadil, Muhammad; Zulfiqar, Sonia; Warsi, Muhammad Farooq; Ejaz, Syeda Rabia; Elnaggar, Ashraf Y.; Fallatah, Ahmed M.; El‐Bahy, Salah M.; Mahmood, Farzana

doi:10.1016/j.ceramint.2022.01.057

Cited by 74 publications

(8 citation statements)

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“…The difference of ionic radii of Ce and Fe is the main cause of this new phase in the crystallite. This phase separation is also reported in literature [24,25]. Different structural parameters estimated from XRD analysis are shown in table 1.…”

Section: Xrd Analysissupporting

confidence: 86%

Multifunctional Ce⁺³ doped nickel-cobalt mixed ferrites via co-precipitation method for photocatalytic and antibacterial activity

Akram,

Junaid,

Ishaque

et al. 2024

Phys. Scr.

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The overuse of industrial dyes and anti-bacterial drugs are destroying fresh water reservoirs and making bacteria more resistant, respectively. To sort out these problems, we have synthesized Cerium doped Nickel-Cobalt mixed ferrites (Ce-@NCMF) with chemical composition [Ni0.4Co0.6CexFe2-xO4 (where x=0.00, 0.10, 0.15, 0.20 and 0.25)] via co-precipitation method. Influence of cerium doping on the structural, optical, electrical, magnetic, photocatalytic and anti-bacterial properties of Ce-@NCMF studied. Powder X-ray diffraction analysis (PXRD) confirmed the synthesis of Ce-@NCMF. Decrease of crystallite size from 29.71 to 24.95 nm was observed with increase in dopant concentration. Tauc’s plot indicated the decrease of energy bandgap from 2.10 to 1.89 eV with increase in dopant concentration, which revealed the absorption of light in visible region to generate electron-hole pairs for photocatalytic applications. FTIR spectra indicated the presence of M-O bonds as major functional group present in Ce-@NCMF. Electrical properties demonstrated the prominent increase of electrical conductivity with increase of Ce-doping. VSM analysis was performed to analyse the magnetic properties of materials and showed prominent decrease in saturation magnetization value from 84.66 to 19.85 emu/g. Owing to optical bandgap in the visible region, all the synthesized samples were evaluated for their photocatalytic potential for the degradation of methylene blue. Ce-@NCMF at x =25% dopant value showed maximum degradation efficiency (95%) under sunlight irradiation of 90 minutes. Kinetic studies of dye degradation followed pseudo-1st order kinetics with maximum rate constant (k) value of 2.78x10-2 min-1. Antibacterial activity results showed the bioactive nature of Ce-@NCMF against all strains of bacteria in consistent with the crystallite size of samples. Smallest crystallite size Ce-@NCMF were found most active against gram-negative bacterial strains.

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Section: Xrd Analysissupporting

confidence: 86%

Multifunctional Ce⁺³ doped nickel-cobalt mixed ferrites via co-precipitation method for photocatalytic and antibacterial activity

Akram,

Junaid,

Ishaque

et al. 2024

Phys. Scr.

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“…The peak at 43.7° (100) also confirmed the presence of rGO nanoparticles in nanocomposite 41 . The highest point at 2Ɵ = 33.7° was (002), which showed the characteristic peak of rGO nanoparticles 3,42–44 …”

Section: Resultsmentioning

confidence: 71%

“…41 The highest point at 2Ɵ = 33.7 was (002), which showed the characteristic peak of rGO nanoparticles. 3,[42][43][44] 3.2 | Fourier transform infrared spectroscopy (FTIR)…”

Section: Preparation Of Zno Npsmentioning

confidence: 99%

“…Its heavy reliance on synthetic dyes, especially azo dyes, has ravaged natural habitats and poses a substantial threat. Although they produce eye‐catching hues, azo dyes are neither decomposable nor eco‐friendly 1–3 . Synthetic dyes are typical pollutants and are frequently present in industrial effluent because of their excellent solubility 4 .…”

Section: Introductionmentioning

confidence: 99%

“…Although they produce eye-catching hues, azo dyes are neither decomposable nor eco-friendly. [1][2][3] Synthetic dyes are typical pollutants and are frequently present in industrial effluent because of their excellent solubility. 4 Notably, the dye industries typically produce a large volume of harmful wastewater, and it is estimated that around 15% of dyes are wasted in industrial outflow during production and processing.…”

Section: Introductionmentioning

confidence: 99%

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Water pollution remediation: Synthesis and characterization of poly(o‐methylaniline)/ZnO/rGO composite for photocatalytic degradation of dyes

Ahmad,

Anjum,

Farid

et al. 2024

Polymers for Advanced Techs

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Water pollution is growing at an alarming rate, particularly due to the colored wastewater released by the various industries into aquifers and fresh water sources, and in some extreme cases, they have reached the water table. Faisalabad, a city in Pakistan where there is an industrial cluster of textiles dyeing and manufacturers, water table has become undrinkable. The presence of hazardous dyes and chemicals imposes serious health issues on humans, animals, and plants. The treatment of such toxic dye effluents is crucial and could be done by efficient degradation methods such as photocatalysis. The current study presents synthesis of poly(o‐methylaniline)/zinc oxide/reduced graphene oxide nanocomposite (POMA/ZnO/rGO NC) using a chemical oxidative polymerization process and explores its properties as a photocatalyst by demonstrating degradation of three dyes. The composite was characterized using X‐ray diffraction (XRD), Fourier‐transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), photoluminescence emission spectroscopy (PL), Brunauer Emmett–Teller analysis (BET), and UV–visible spectroscopy (UV–visible). Further, the photocatalytic activity of POMA/ZnO/rGO NC was evaluated and compared by degrading the direct yellow 12 (DY 12), congo red (CR), and malachite green (MG) dyes in aqueous media under UV irradiation. The results indicated that after 110 min, POMA/ZnO/rGO composite degraded the dyes by 92% (DY 12), 86.1% (CR), and 82.1% (MG), respectively. Moreover, kinetic studies of the photocatalyst were also performed along with reusability test, total organic carbon, chemical oxygen demand, and degradation mechanism.

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Visible‐Light Photocatalytic Activity of a Novel TiO₂/g‐C₃N₄/CuFe₂O₄ Nanocomposite in Degradation Amoxicillin, Chlorpyrifos and Methylene Blue

Vijayalakshmi,

Shanmugavelan,

Muthu Mareeswaran

et al. 2024

ChemistrySelect

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A novel TiO2/g‐C3N4/CuFe2O4 nanocomposite is synthesized via a wet impregnation process and has been evaluated for photocatalytic degradation of organic pollutants such as Amoxicillin (Antibiotic), Chlorpyrifos (Pesticide), and Methylene blue (Dye) under dark and visible light conditions in water. The synthesis and its photocatalytic characterization of nanocomposite are analyzed using XRD, FT‐IR, HR‐SEM, TEM, EDS, XPS, UV‐Vis, DRS, PL, BET, EIS, VSM, and ESR analysis. Among the various organic pollutants analyzed using TiO2/g‐C3N4/CuFe2O4 to serve as a photocatalyst, the degradation of MB pollutant was significantly greater (99.5 %, k=0.0533 min−1) in comparison to the degradation of the AMX (97.6 %, k=0.0346 min−1) and CPF (97.3 %, k=0.0340 min−1) during visible light irradiation for a period of 90 minutes. The recyclability is validated over three cycles, displayed its stability with 76 % degradation of pollutants and the photocatalyst is also easily separated using a simple magnet for further recycling study. As observed in the results of ESR, the formation of O2 significantly accelerated the superoxide radical generation during the photocatalytic degradation of pollutants, enhancing degradation efficiency. It is worth highlighting that the remarkable degradation efficacy, stability and reusability exhibited by the synthesised nanocomposite prove advantageous for subsequent applications.

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Wet-chemical synthesis of nanostructured Ce-doped mixed metal ferrites for the effective removal of azo dyes from industrial discharges

Cited by 74 publications

References 50 publications

Multifunctional Ce⁺³ doped nickel-cobalt mixed ferrites via co-precipitation method for photocatalytic and antibacterial activity

Multifunctional Ce⁺³ doped nickel-cobalt mixed ferrites via co-precipitation method for photocatalytic and antibacterial activity

Water pollution remediation: Synthesis and characterization of poly(o‐methylaniline)/ZnO/rGO composite for photocatalytic degradation of dyes

Visible‐Light Photocatalytic Activity of a Novel TiO₂/g‐C₃N₄/CuFe₂O₄ Nanocomposite in Degradation Amoxicillin, Chlorpyrifos and Methylene Blue

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Wet-chemical synthesis of nanostructured Ce-doped mixed metal ferrites for the effective removal of azo dyes from industrial discharges

Cited by 74 publications

References 50 publications

Multifunctional Ce+3 doped nickel-cobalt mixed ferrites via co-precipitation method for photocatalytic and antibacterial activity

Multifunctional Ce+3 doped nickel-cobalt mixed ferrites via co-precipitation method for photocatalytic and antibacterial activity

Water pollution remediation: Synthesis and characterization of poly(o‐methylaniline)/ZnO/rGO composite for photocatalytic degradation of dyes

Visible‐Light Photocatalytic Activity of a Novel TiO2/g‐C3N4/CuFe2O4 Nanocomposite in Degradation Amoxicillin, Chlorpyrifos and Methylene Blue

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Product

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Multifunctional Ce⁺³ doped nickel-cobalt mixed ferrites via co-precipitation method for photocatalytic and antibacterial activity

Multifunctional Ce⁺³ doped nickel-cobalt mixed ferrites via co-precipitation method for photocatalytic and antibacterial activity

Visible‐Light Photocatalytic Activity of a Novel TiO₂/g‐C₃N₄/CuFe₂O₄ Nanocomposite in Degradation Amoxicillin, Chlorpyrifos and Methylene Blue