Ultrasound assisted synthesis of magnetic Fe3O4/ɑ-MnO2 nanocomposite for photodegradation of organic dye

Dubey, Monika; Challagulla, Navakanth Vijay; Wadhwa, Shikha; Kumar, Ranjit

doi:10.1016/j.colsurfa.2020.125720

Cited by 41 publications

(16 citation statements)

References 49 publications

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“…Figure displays a broad absorption spectrum at 349 nm in the UV–visible spectra of the β-CD/Fe 3 O 4 NPs that were synthesized. The magnetic nanoparticles can absorb UV light within the range of 330–450 nm due to how the light is absorbed and scattered by the particles . Prior studies have yielded comparable outcomes .…”

Section: Resultsmentioning

confidence: 99%

Green Synthesis of Magnetic Supramolecules β-Cyclodextrin/Iron Oxide Nanoparticles for Photocatalytic and Antibacterial Applications

Almutairi,

Al-Rasheed,

Alaqil

et al. 2023

ACS Omega

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Iron oxide nanoparticles (Fe 3 O 4 NPs) are a fascinating field of study due to their wide range of practical applications in environmental and medical contexts. This study presents a straightforward, environmentally friendly method for producing Fe 3 O 4 NPs utilizing β-cyclodextrin (β-CD) as a reducing and capping agent. This approach results in the rapid and effective eco-friendly synthesis of β-CD/Fe 3 O 4 NPs. The properties and characteristics of β-CD/Fe 3 O 4 NPs were investigated using various methods, including ultraviolet−visible (UV/vis) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetry analysis (TGA), and vibrating-sample magnetometry (VSM). The absorption of β-CD/Fe 3 O 4 NPs caused a distinct peak at 349 nm, as evidenced by the results of UV/vis studies. This peak was attributed to the absorption of surface plasmon resonance. The crystalline nature of β-CD/Fe 3 O 4 NPs was confirmed through XRD analysis. The SEM and TEM analyses have verified the geometry and structural characteristics of β-CD/Fe 3 O 4 NPs. The β-CD/Fe 3 O 4 NPs exhibited remarkable effectiveness in the decomposing efficiency (%) of methylene blue (MB) dye with 52.2, 94.1, and 100% for 0.2, 0.4, and 0.6 g β-CD/ Fe 3 O 4 NPs, respectively. In addition, the highest efficiency in hunting radicals was observed (347.2 ± 8.2 mg/g) at 100 mg/mL β-CD/Fe 3 O 4 NPs; the combination of β-CD/Fe 3 O 4 NPs exhibited remarkable effectiveness in inhibiting the growth of some bacteria that cause infections. The capabilities of β-CD/Fe 3 O 4 NPs for various applications showed that these materials could be used in photocatalytic, antioxidants, and antibacterial. Additionally, the eco-friendly synthesis of these materials makes them a promising option for the remediation of harmful pollutants and microbes.

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Section: Resultsmentioning

confidence: 99%

Green Synthesis of Magnetic Supramolecules β-Cyclodextrin/Iron Oxide Nanoparticles for Photocatalytic and Antibacterial Applications

Almutairi,

Al-Rasheed,

Alaqil

et al. 2023

ACS Omega

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“…For solution B, 3.475 g KMnO 4 was added in 56 mL DDW followed by 1.7 mL concentrated HNO 3 . This process essentially ensures the synthesis of α-MnO 2 as reported by Dubey et al and Kumar et al [27,28]. The next step involves the addition of GQD solution (5 mL) into solution A under 20 min of ultrasonication, followed by dropwise addition of solution B into solution A under stirring conditions.…”

Section: Synthesis Of α-Mno 2 /Gqd Nanocompositementioning

confidence: 87%

An Enzymatic Multiplexed Impedimetric Sensor Based on α-MnO2/GQD Nano-Composite for the Detection of Diabetes and Diabetic Foot Ulcer Using Micro-Fluidic Platform

et al. 2021

Self Cite

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Diabetes is widely considered as a silent killer which affects the internal organs and ultimately has drastic impacts on our day-to-day activities. One of the fatal outcomes of diabetes is diabetic foot ulcer (DFU); which, when becomes chronic, may lead to amputation. The incorporation of nanotechnology in developing bio-sensors enables the detection of desired biomarkers, which in our study are glucose and L-tyrosine; which gets elevated in patients suffering from diabetes and DFUs, respectively. Herein, we report the development of an enzymatic impedimetric sensor for the multi-detection of these biomarkers using an electrochemical paper-based analytical device (µ-EPADs). The structure consists of two working electrodes and a counter electrode. One working electrode is modified with α-MnO2-GQD/tyrosinase hybrid to aid L-tyrosine detection, while the other electrode is coated with α-MnO2-GQD/glucose oxidase hybrid for glucose monitoring. Electrochemical impedance spectroscopy has been employed for the quantification of glucose and L-tyrosine, within a concentration range of 50–800 mg/dL and 1–500 µmol/L, respectively, using a sample volume of approximately 200 µL. The impedance response exhibited a linear relationship over the analyte concentration range with detection limits of ~58 mg/dL and ~0.3 µmol/L for glucose and tyrosine respectively, with shelf life ~1 month. The sensing strategy was also translated to Arduino-based device applications by interfacing the µ-EPADs with miniaturized electronics.

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“…77 Consequently, the toxic and dangerous CV dye is converted into far less harmful byproducts by the use of the photocatalytic process. 78 Dubye et al 79 demonstrated the reaction mechanism of the photodegradation of CV dye utilizing Fe 3 O 4 /⊍-MnO 2 . They suggested that Fe 3 O 4 adsorbs the CV dye at first on its surface and 61 that the synergistic interaction between ⊍-MnO 2 and Fe 3 O 4 thereby speeds up the redox reactions of Fe 3+ /Fe 2+ and Mn 4+ / Mn 3+ , leading to accelerated generation of (•OH) radical.…”

Section: Photodegradation Mechanism Of CV Dyementioning

confidence: 99%

An overview of prominent factors influencing the photocatalytic degradation of cationic crystal violet dye employing diverse nanostructured materials

Shabna,

Singh,

Dhas

et al. 2024

J of Chemical Tech & Biotech

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Crystal violet (CV), a cationic dye, has been demonstrated to be a powerful carcinogen, a mitotic toxin and poisonous to mammalian cells such that the predominant presence of the dye invariably causes several effects of destruction to mankind and it necessitates a clarion call to do away with this nuisance before it can produce a snowball effect. The recent widespread reporting of the photocatalysis‐mediated degradation of CV as an emerging technique for removing this dangerous dye from aqueous mediums highlights its effectiveness. Numerous researchers have contributed substantially to describing how photocatalysis‐based nanomaterials could be used to degrade CV. The fundamentals and the factors that predominantly influence CV degradation are highlighted in this work. These factors include the nature of nanomaterials, catalyst concentration, dye dosage, pH of the solution in use, temperature and light intensity. Additionally, thorough kinetics and mechanistic descriptions are also included to give crucial insights into the light‐mediated reaction of CV. The present study's findings have the potential to alleviate practitioners and researchers of the burden of having to navigate through numerous studies under each category of parameters to get an exhaustive overview of all of the different variables that may affect the photocatalytic degradation of CV dye. In order to further enhance the photocatalytic degradation efficiency of CV, researchers can expand on this study by investigating novel strategies to lessen the impact of certain elements that adversely affect the photocatalytic reaction process. The potential prospects for extending the advancement of scientific study in this area are also explored. © 2024 Society of Chemical Industry (SCI).

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Ultrasound assisted synthesis of magnetic Fe3O4/ɑ-MnO2 nanocomposite for photodegradation of organic dye

Cited by 41 publications

References 49 publications

Green Synthesis of Magnetic Supramolecules β-Cyclodextrin/Iron Oxide Nanoparticles for Photocatalytic and Antibacterial Applications

Green Synthesis of Magnetic Supramolecules β-Cyclodextrin/Iron Oxide Nanoparticles for Photocatalytic and Antibacterial Applications

An Enzymatic Multiplexed Impedimetric Sensor Based on α-MnO2/GQD Nano-Composite for the Detection of Diabetes and Diabetic Foot Ulcer Using Micro-Fluidic Platform

An overview of prominent factors influencing the photocatalytic degradation of cationic crystal violet dye employing diverse nanostructured materials

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