Catalytic activity of non-spherical shaped magnetite nanoparticles in degradation of Sudan I, Rhodamine B and Methylene Blue dyes

Radoń, Adrian; Łoński, Sylwester; Warski, Tymon; Babilas, R.; Tański, Tomasz; Dudziak, Mariusz; Łukowiec, Dariusz

doi:10.1016/j.apsusc.2019.05.091

Cited by 57 publications

(14 citation statements)

References 51 publications

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“…The adsorption assays (on dark) performed for RhB (12 h) and MB (0.5 h) showed that while RhB adsorption was only 1%, MB reached 18% e cacy for the different nano bers. According to the literature, these results were shown more signi cant MB adsorption than RhB when other nanomaterials were applied (Choi et al 2015;Radoń et al 2019). Thus, after the adsorption equilibrium, the dyes were subjected to photocatalytic assays under UV light, and the degradation curves were shown in Fig.…”

Section: Photocatalytic Degradation Of Dyesmentioning

confidence: 82%

Potential of Nb2O5 nanofibers in photocatalytic degradation of organic pollutants

Jesus

Moreira

Sá

et al. 2021

Environ Sci Pollut Res

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Due to the pollution caused by different organic pollutants, various photocatalytic nanomaterials for environmental remediation have been promoted. In this study, Nb 2 O 5 nano bers were obtained by electrospinning technique, presenting controlled crystallinity and high speci c surface area to improve the photoactivity response. The structural characterization indicated Nb 2 O 5 nano bres with orthorhombic phase formation, and the photoluminescence measurements showed different energy levels contributing to the electronic transition events. The nano bers with a bandgap up to 3.6 eV were applied to photocatalysis of dyes [Rhodamine B (RhB) or Methylene Blue (MB)], and Prozac®, listed as an emergent pollutant. In the optimized condition (pH = 9), the RhB and MB photocatalysis was 59% and 93% more e cient than photolysis due to ζ = − 50 ± 5 mV for EtOH_550 sample that increased the interaction with MB (cationic) compared to RhB unprotonated (pKa = 3.7). Therefore, Prozac® (pKa = 10.7) was selected due to protonated form at pH = 9 and showed 68% ±1 adsorption in 30 min for EtOH_550. The Prozac® photocatalytic degradation under UV light irradiation was up to 17% higher than the photolytic degradation. The formation of hydroxyl radicals in the photocatalytic system (EtOH_550) was proven by the Coumarine probe assay, corroborating with the greater amount of α-[2-(Methylamino)ethyl]benzylalcohol (MAEB), a by-product obtained after Prozac® oxidation. Additionally, the material achieved speci c catalytic activity for the different organic compounds (RhB, MB, or Prozac®), showing that only using dyes may not be ideal to conclude the great material applicability in environmental remediation studies. Therefore, Nb 2 O 5 nano bers were e cient for the degradation of three different pollutants under UV light, proving to be a viable alternative for environmental remediation.

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Section: Photocatalytic Degradation Of Dyesmentioning

confidence: 82%

Potential of Nb2O5 nanofibers in photocatalytic degradation of organic pollutants

Jesus

Moreira

Sá

et al. 2021

Environ Sci Pollut Res

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“…It is also worthy of mention that the prepared magnetic nanoparticles are non-spherical in shape (Figure 3A,B). Very recently, the non-spherical-shaped Fe 3 O 4 nanoparticles have been consistently synthesized by co-precipitation method [48]. Besides, synthesis of iron oxide nanoparticles with a variety of morphologies by co-precipitation method was already described by Vasylkiv and co-workers [49].…”

Section: Resultsmentioning

confidence: 99%

Affinity Immobilization of a Bacterial Prolidase onto Metal-Ion-Chelated Magnetic Nanoparticles for the Hydrolysis of Organophosphorus Compounds

Wang

Chi

et al. 2019

IJMS

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In this study, silica-coated magnetic nanoparticles (SiMNPs) with isocyanatopropyltriethoxysilane as a metal-chelating ligand were prepared for the immobilization of His6-tagged Escherichia coli prolidase (His6-EcPepQ). Under one-hour coupling, the enzyme-loading capacity for the Ni2+-functionalized SiMNPs (NiNTASiMNPs) was 1.5 mg/mg support, corresponding to about 58.6% recovery of the initial activity. Native and enzyme-bound NiNTASiMNPs were subsequently characterized by transmission electron microscopy (TEM), superparamagnetic analysis, X-ray diffraction, and Fourier transform infrared (FTIR) spectroscopy. As compared to free enzyme, His6-EcPepQ@NiNTASiMNPs had significantly higher activity at 70 °C and pH ranges of 5.5 to 10, and exhibited a greater stability during a storage period of 60 days and could be recycled 20 times with approximately 80% retention of the initial activity. The immobilized enzyme was further applied in the hydrolysis of two different organophosphorus compounds, dimethyl p-nitrophenyl phosphate (methyl paraoxon) and diethyl p-nitrophenyl phosphate (ethyl paraoxon). The experimental results showed that methyl paraoxon was a preferred substrate for His6-EcPepQ and the kinetic behavior of free and immobilized enzymes towards this substance was obviously different. Taken together, the immobilization strategy surely provides an efficient means to deposit active enzymes onto NiNTASiMNPs for His6-EcPepQ-mediated biocatalysis.

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“…The photocatalytic activity of magnetite nanoparticles with different shapes in removing azo dyes investigated by (Radoń et al 2019). Azo dyes are synthetic compounds widely used in the food, cosmetic, leather and textile industries.…”

Section: Photodegradation Performancementioning

confidence: 99%

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

et al. 2021

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The rapid urbanization and industrialization is causing worldwide water pollution, calling for advanced cleaning methods. For instance, pollutant adsorption on magnetic oxides is efficient and very practical due to the easy separation from solutions by an magnetic field. Here we review the synthesis and performance of magnetic oxides such as iron oxides, spinel ferrites, and perovskite oxides for water remediation. We present structural, optical, and magnetic properties. Magnetic oxides are also promising photocatalysts for the degradation of organic pollutants. Antimicrobial activities and adsorption of heavy metals and radionucleides are also discussed.

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Catalytic activity of non-spherical shaped magnetite nanoparticles in degradation of Sudan I, Rhodamine B and Methylene Blue dyes

Cited by 57 publications

References 51 publications

Potential of Nb2O5 nanofibers in photocatalytic degradation of organic pollutants

Potential of Nb2O5 nanofibers in photocatalytic degradation of organic pollutants

Affinity Immobilization of a Bacterial Prolidase onto Metal-Ion-Chelated Magnetic Nanoparticles for the Hydrolysis of Organophosphorus Compounds

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

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