In situ reductive regeneration of zerovalent iron nanoparticles immobilized on cellulose for atom efficient Cr(<scp>vi</scp>) adsorption

Sharma, Archana; Kumar, Rajesh; Mittal, Sunil; Hussain, Shamima; Arora, Meenakshi; Sharma, Renu; Babu, J. Nagendra

doi:10.1039/c5ra19917d

Cited by 27 publications

(11 citation statements)

References 62 publications

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“…Furthermore, the biodegradability of naturally occurring nontoxic biopolymers renders them suitable agents for surface modification, as well as stabilization of various nanoparticles. Several plant‐derived components, such as guar gum, chitosan, starch, xanthan gum, riboflavin, cellulose, agar–agar, and Pluronic F‐127, have been used for the stabilization of nZVI particles.…”

Section: Synthetic Approachesmentioning

confidence: 99%

Sustainable Synthesis of Nanoscale Zerovalent Iron Particles for Environmental Remediation

et al. 2020

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Nanoscale zerovalent iron (nZVI) particles represent an important material for diverse environmental applications because of their exceptional electron‐donating properties, which can be exploited for applications such as reduction, catalysis, adsorption, and degradation of a broad range of pollutants. The synthesis and assembly of nZVI by using biological and natural sustainable resources is an attractive option for alleviating environmental contamination worldwide. In this Review, various green synthesis pathways for generating nZVI particles are summarized and compared with conventional chemical and physical methods. In addition to describing the latest environmentally benign methods for the synthesis of nZVI, their properties and interactions with diverse biomolecules are discussed, especially in the context of environmental remediation and catalysis. Future prospects in the field are also considered.

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Section: Synthetic Approachesmentioning

confidence: 99%

Sustainable Synthesis of Nanoscale Zerovalent Iron Particles for Environmental Remediation

et al. 2020

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“…Energy‐dispersive X‐ray spectroscopy (EDS) spectrum confirms the presence of carbon (C), iron (Fe), and oxygen (O) of synthesized nanocomposites CI‐IO‐1, 2, 3, and 4 as shown in the inset of FESEM images. X‐ray diffraction ( XRD) pattern confirms the formation of Fe 3 O 4 nanoparticles and immobilization on microcrystalline cellulose, sharp reflections at 2θ = 15.92 and 22.49 for a crystalline‐I form of cellulose [ 73 ] and 2θ = 30.00, 36.00, 43.19, 50.32, 61.39, and 73.91 having planes (220), (311), (400), (422), (440), and (620), respectively, for Fe 3 O 4 in powder X‐ray diffraction (Figure 2a) pattern. [ 74,75 ] The thermal stability of MCC and CI‐IO‐3 nanocomposite (Fe 3 O 4 immobilized on microcrystalline cellulose) were studied by using thermogravimetric analysis (TGA) that was carried out under inert conditions at rt up to 600°C with a constant heating rate of 10°C min −1 (Figure 2b).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of in situ immobilized iron oxide nanoparticles (Fe₃O₄) on microcrystalline cellulose: Ecofriendly and recyclable catalyst for Michael addition

Kumar

Reddy

Dwivedi

et al. 2021

Applied Organom Chemis

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Microcrystalline cellulose-immobilized Fe 3 O 4 magnetic nanoparticles (Fe 3 O 4 @MCC) with iron loading 5%-20% are synthesized and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The synthesized nanocomposites were studied for their catalytic activity towards Michael addition reaction by employing 1,3-cyclohexadione/dimedone and styrylisoxazole in an aqueous ethanolic medium. The catalyst with 15% iron loading showed the highest efficiency with an excellent yield. Michael addition reaction is one of the most important reaction for the creation of a carbon-carbon bond and widely used in organic synthesis under mild condition. The prepared catalyst performed well in Michael addition reaction and afforded the product in excellent yield. The

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“…nZVI adsorbs Cr(VI) to Fe (III) by zero-valent iron redox. Fe(III) is reduced and regenerated to zero-valent iron by the in situ oxidation of cellulose to cellulose dialdehyde [99].…”

Section: Adsorption Mechanismmentioning

confidence: 99%

Application of nanoscale zero-valent iron in hexavalent chromium-contaminated soil: A review

Chen

et al. 2020

Nanotechnology Reviews

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Chromium (Cr) is a common toxic heavy metal that is widely used in all kinds of industries, causing a series of environmental problems. Nanoscale zero- valent iron (nZVI) is considered to be an ideal remediation material for contaminated soil, especially for heavy metal pollutants. As a material of low toxicity and good activity, nZVI has been widely applied in the in situ remediation of soil hexavalent chromium (Cr(vi)) with mobility and toxicity in recent years. In this paper, some current technologies for the preparation of nZVI are summarized and the remediation mechanism of Cr(vi)-contaminated soil is proposed. Five classified modified nZVI materials are introduced and their remediation processes in Cr(vi)-contaminated soil are summarized. Key factors affecting the remediation of Cr(vi)-contaminated soil by nZVI are studied. Interaction mechanisms between nZVI-based materials and Cr(vi) are explored. This study provides a comprehensive review of the nZVI materials for the remediation of Cr(vi)-contaminated soil, which is conducive to reducing soil pollution.

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In situ reductive regeneration of zerovalent iron nanoparticles immobilized on cellulose for atom efficient Cr(vi) adsorption

Cited by 27 publications

References 62 publications

Sustainable Synthesis of Nanoscale Zerovalent Iron Particles for Environmental Remediation

Sustainable Synthesis of Nanoscale Zerovalent Iron Particles for Environmental Remediation

Synthesis of in situ immobilized iron oxide nanoparticles (Fe₃O₄) on microcrystalline cellulose: Ecofriendly and recyclable catalyst for Michael addition

Application of nanoscale zero-valent iron in hexavalent chromium-contaminated soil: A review

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In situ reductive regeneration of zerovalent iron nanoparticles immobilized on cellulose for atom efficient Cr(vi) adsorption

Cited by 27 publications

References 62 publications

Sustainable Synthesis of Nanoscale Zerovalent Iron Particles for Environmental Remediation

Sustainable Synthesis of Nanoscale Zerovalent Iron Particles for Environmental Remediation

Synthesis of in situ immobilized iron oxide nanoparticles (Fe3O4) on microcrystalline cellulose: Ecofriendly and recyclable catalyst for Michael addition

Application of nanoscale zero-valent iron in hexavalent chromium-contaminated soil: A review

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Synthesis of in situ immobilized iron oxide nanoparticles (Fe₃O₄) on microcrystalline cellulose: Ecofriendly and recyclable catalyst for Michael addition