Bio inspired green synthesis of Ni/Fe3O4 magnetic nanoparticles using Moringa oleifera leaves extract: A magnetically recoverable catalyst for organic dye degradation in aqueous solution

Prasad, Cheera; Karlapudi, S.; Seelolla, Gangadhara; Venkateswarlu, P.

doi:10.1016/j.jallcom.2016.12.363

Cited by 117 publications

(37 citation statements)

References 40 publications

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“…The organic phase was purified on a short pad of silica gel using hexane and ethyl acetate to give the corresponding coupling product. All organic products were recognized easily by spectroscopy techniques such as 1 H NMR, 13 (400) planes, respectively. Therefore, the formation of CuO nanocrystal synthesized from the E. maculata extract was clearly demonstrated by XRD studies, which is in agreement with previous studies.…”

Section: General Procedures For Aryl-sulfur Couplingmentioning

confidence: 99%

“…Although these two methods are widely used for the synthesis of CuO NPs, issues such as expensive reagent, longer reaction time, and dangerous reaction condition for separating synthesized nanoparticles can make these methods difficult . These difficulties can be solved by green chemistry …”

Section: Introductionmentioning

confidence: 99%

“…[12] These difficulties can be solved by green chemistry. [13] Phytonanotechnology is a biological method for the synthesis of highly stable and small sized metal nanoparticles. Lately, this method has drawn much attention in researches.…”

Section: Introductionmentioning

confidence: 99%

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C‐S cross‐coupling reaction using novel and green synthesized CuO nanoparticles assisted by Euphorbia maculata extract

Alinezhad

Pakzad

2019

Applied Organom Chemis

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In the present study, biosynthesis of CuO nanoparticles using a rapid, eco‐friendly, cost‐effective and efficient method has been reported employing aqueous Euphorbia maculata extract as mild, renewable and non‐toxic reducing and capping agents without adding any surfactants. The biogenic and green method has some benefits compared to conventional physical and chemical methods. It is simple, cheap and environmentally friendly. The biosynthesized CuO NP displayed a color change pattern (from sky blue to black) on preparation and presented its respective broad peak at 365 nm, which was analyzed by UV–Vis spectroscopy. Using the FT‐IR analysis, biomolecules in E. maculata extract which are responsible for bioreduction activity and synthesize of CuO NP, were identified. The XRD, EDX and FESEM results confirmed the successful synthesis of CuO nanoparticles of 18 nm sizes, with spherical and sponge crystal structure. The catalytic activity of biosynthesized CuO NPs was studied in C‐S cross‐coupling reaction. This method has the advantages of high yields, easy work‐up, and simple reusability. The recovered CuO NP can be reused four times without any considerable loss of its catalytic activity.

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Section: General Procedures For Aryl-sulfur Couplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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C‐S cross‐coupling reaction using novel and green synthesized CuO nanoparticles assisted by Euphorbia maculata extract

Alinezhad

Pakzad

2019

Applied Organom Chemis

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“…Prasad et al (2017) [37] reported one-step biosynthesized magnetic nickel/iron-oxide core shell NPs using 20 grams of Moringa oleifera extract. Gosh et al [38] reported one-step biosynthesized gold/silver core shell NPs using Dioscorea bulbifera.…”

Section: Greener Synthesis Of Core-shell Nanoparticles Using Plantsmentioning

confidence: 99%

Core@shell Nanoparticles: Greener Synthesis Using Natural Plant Products

et al. 2018

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Featured Application: Greener synthesis and applications of Core-shell nanoparticles.Abstract: Among an array of hybrid nanoparticles, core-shell nanoparticles comprise of two or more materials, such as metals and biomolecules, wherein one of them forms the core at the center, while the other material/materials that were located around the central core develops a shell. Core-shell nanostructures are useful entities with high thermal and chemical stability, lower toxicity, greater solubility, and higher permeability to specific target cells. Plant or natural products-mediated synthesis of nanostructures refers to the use of plants or its extracts for the synthesis of nanostructures, an emerging field of sustainable nanotechnology. Various physiochemical and greener methods have been advanced for the synthesis of nanostructures, in contrast to conventional approaches that require the use of synthetic compounds for the assembly of nanostructures. Although several biological resources have been exploited for the synthesis of core-shell nanoparticles, but plant-based materials appear to be the ideal candidates for large-scale green synthesis of core-shell nanoparticles. This review summarizes the known strategies for the greener production of core-shell nanoparticles using plants extract or their derivatives and highlights their salient attributes, such as low costs, the lack of dependence on the use of any toxic materials, and the environmental friendliness for the sustainable assembly of stabile nanostructures.

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“…5(C)). [36][37][38] The peak intensities of Fe 2p 3/2 and Fe 2p 1/2 , aer repeated use for 10 times, was weaker than that obtained before use, accompanied by broadening of their peak shapes. This suggested leakage of iron ions on the surface of the samples.…”

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confidence: 99%

Activation of persulfate by MMIOC for highly efficient degradation of rhodamine B

Xie

2017

RSC Adv.

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Mesoporous magnetic iron oxide composites (MMIOCs) were successfully prepared using one-step evaporation induced self-assembly using an organic ferrocene surface active agent as the iron source, and innovatively studied as a potential alternative to mesoporous Co 3 O 4 for ammonium persulfate (PS) activation to generate active radicals. MMIOCs were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N 2 adsorption/desorption, transmission electron microscopy (TEM) and using a vibrating sample magnetometer (VSM). Among the different Fe x O y /PS systems tested, the MMIOC displayed the highest catalytic activity for PS activation, achieving almost complete degradation of 1 mM rhodamine B (RhB) within 120 minutes at 0.2 g L À1 catalyst and 40.0 mM PS. The superior catalytic performance of the MMIOC was ascribed to the combination of iron ions inlayed or embedded in the inner or outer surface, forming catalytically active sites and the magnetic mesoporous structure.Several factors played important roles in controlling the degradation of RhB. The equilibrium between Fe(II) and^Fe(III) for PS activation in solution ensured continuous generation of the hydroxyl and sulfate radicals, and the latter made the predominant contribution for RhB degradation. Considering its outstanding catalytic activity, excellent reusability and long-term stability, MMIOC could be an ideal catalyst for the degradation of RhB. These results provide an applied solution for disposing of toxic organic wastewater in a relatively available environment, and a scientific foundation for solving refractory organic contaminant related to environmental management.

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Bio inspired green synthesis of Ni/Fe3O4 magnetic nanoparticles using Moringa oleifera leaves extract: A magnetically recoverable catalyst for organic dye degradation in aqueous solution

Cited by 117 publications

References 40 publications

C‐S cross‐coupling reaction using novel and green synthesized CuO nanoparticles assisted by Euphorbia maculata extract

C‐S cross‐coupling reaction using novel and green synthesized CuO nanoparticles assisted by Euphorbia maculata extract

Core@shell Nanoparticles: Greener Synthesis Using Natural Plant Products

Activation of persulfate by MMIOC for highly efficient degradation of rhodamine B

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