Ultrasonic Synthesis of Zero Valent Iron Nanoparticles for the Efficient Discoloration of Aqueous Solutions Containing Methylene Blue Dye

Kamali, Mohammadreza; Costa, Maria Elisabete V.

doi:10.1002/9781119459804.ch8

Cited by 4 publications

(4 citation statements)

References 65 publications

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“…p Ã transitions [28]. The reduction of methylene blue into its colourless form is schematically represented in Figure 6 [65,66] and further analysed by spectrophotometer using Figure 7(a,b) to monitor the absorption maximum at 654 nm. The kinetic plot of ln[A] versus time graph Figure 7(c) verifies that it follows a pseudofirst order kinetics.…”

Section: Catalytic Degradationmentioning

confidence: 99%

Microwave assisted green synthesis of silver nanoparticles for optical, catalytic, biological and electrochemical applications

Anjana¹,

Joseph²,

Francis³

et al. 2021

Artificial Cells, Nanomedicine, and Biotechnology

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Plant-derived nanoparticles have multi-functionalities owing to their ecological origin and biocompatible nature. A novel and stable silver nanoparticle (AgNP) was reported here using Cyanthillium cinereum (C. cinereum) as a reducing as well as capping agent by rapid microwave-assisted green method. The synthesized nanoparticles revealed their crystalline and spherical nature with an average size of 19.25 ± 0.44 nm in HR-TEM analysis. The excitation of electrons from occupied d-bands to states above the Fermi level while employing photoluminescence studies of AgNP indicated their awesome optical properties. Rapid decomposition of dangerous organic dyes like methylene blue and fuchsine in the catalytic presence of AgNP was evidenced from simple UV-visible spectral analysis. In vitro antioxidant potential assessed by DPPH assay indicated an IC 50 value of 40.80 ± 0.14 lg/mL for the new AgNP. A substantial control on the growth of pathogenic bacteria such as Staphylococcus aureus and Klebsiella pneumonia can be achieved by synthesized nanoparticles as demonstrated by the well diffusion method. AgNP was also functioned as a non-enzymatic electrochemical sensor with a sharp oxidation peak with peak potentials at 0.366 V and it has a wide application as a bio sensor in neurobiology especially in the detection of neurotransmitters like dopamine with high sensitivity.

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Section: Catalytic Degradationmentioning

confidence: 99%

Microwave assisted green synthesis of silver nanoparticles for optical, catalytic, biological and electrochemical applications

Anjana¹,

Joseph²,

Francis³

et al. 2021

Artificial Cells, Nanomedicine, and Biotechnology

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show abstract

“…Sun et al observed, for example, that the methylene blue (MB) dye removal from water utilizes all four reaction path, depending on the pH of the solution and oxygen content [77] (Figure 6). Kamali et al have synthesized nZVI, with an average particle size of 27 nm, by the borohydride route and applied the NPs for the discoloration of methylene blue (MB) [78]. The pH of the solution was found to be a key factor for achieving 100% discoloration efficiency, as well as the high crystallinity and large specific surface area of iron NPs.…”

Section: Organic Dye Discolouration/decomposition In Watermentioning

confidence: 99%

“…Barreto-Rodrigues et al optimized the reaction conditions of the nZVI synthesis from FeCl2 and NaBH4 (see above), and studied the degradation of the azo dye Disperse Red 1 (DR1) [18]. nZVI effectively decolorized DR1 in a short time, however, without mineralization, indicating that the Kamali et al have synthesized nZVI, with an average particle size of 27 nm, by the borohydride route and applied the NPs for the discoloration of methylene blue (MB) [78]. The pH of the solution was found to be a key factor for achieving 100% discoloration efficiency, as well as the high crystallinity and large specific surface area of iron NPs.…”

Section: Organic Dye Discolouration/decomposition In Watermentioning

confidence: 99%

Synthesis and Application of Zero-Valent Iron Nanoparticles in Water Treatment, Environmental Remediation, Catalysis, and Their Biological Effects

2020

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Present and past anthropogenic pollution of the hydrosphere and lithosphere is a growing concern around the world for sustainable development and human health. Current industrial activity, abandoned contaminated plants and mining sites, and even everyday life is a pollution source for our environment. There is therefore a crucial need to clean industrial and municipal effluents and remediate contaminated soil and groundwater. Nanosized zero-valent iron (nZVI) is an emerging material in these fields due to its high reactivity and expected low impact on the environment due to iron’s high abundance in the earth crust. Currently, there is an intensive research to test the effectiveness of nZVI in contaminant removal processes from water and soil and to modify properties of this material in order to fulfill specific application requirements. The number of laboratory tests, field applications, and investigations for the environmental impact are strongly increasing. The aim of the present review is to provide an overview of the current knowledge about the catalytic activity, reactivity and efficiency of nZVI in removing toxic organic and inorganic materials from water, wastewater, and soil and groundwater, as well as its toxic effect for microorganisms and plants.

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“…Management of the generated solid wastes may include the activities responsible for the release of CO2 into the atmosphere. However, as stated before, novel membrane-based treatment methods are based on the combinations of membranes with other methods such as chemical oxidation (e.g., with nanomaterials [214]) to increase the quality of the treated effluent and to prevent the membrane fouling process. In this case, complete oxidation of organic compounds may result in the production of CO2 and H2O as final products.…”

Section: Co2 Emissionmentioning

confidence: 99%

Sustainability considerations in membrane-based technologies for industrial effluents treatment

Kamali

Suhas²,

Costa

et al. 2019

Chemical Engineering Journal

269

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Ultrasonic Synthesis of Zero Valent Iron Nanoparticles for the Efficient Discoloration of Aqueous Solutions Containing Methylene Blue Dye

Cited by 4 publications

References 65 publications

Microwave assisted green synthesis of silver nanoparticles for optical, catalytic, biological and electrochemical applications

Microwave assisted green synthesis of silver nanoparticles for optical, catalytic, biological and electrochemical applications

Synthesis and Application of Zero-Valent Iron Nanoparticles in Water Treatment, Environmental Remediation, Catalysis, and Their Biological Effects

Sustainability considerations in membrane-based technologies for industrial effluents treatment

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