Magnetically recoverable graphene oxide supported Co@Fe 3 O 4 /L-dopa for C-C cross-coupling and oxidation reactions in aqueous medium

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Magnetically recoverable graphene oxide supported Co@Fe 3 O 4 /L-dopa for C-C cross-coupling and oxidation reactions in aqueous medium. / Sharma, Harsha; Sharma, Shally; Sharma, Chandan; Paul, Satya; Clark, James H.

In: Molecular Catalysis, Vol. 469, 01.05.2019, p. 27-39.

Research output: Contribution to journalArticlepeer-review

Harvard

Sharma, H, Sharma, S, Sharma, C, Paul, S & Clark, JH 2019, 'Magnetically recoverable graphene oxide supported Co@Fe 3 O 4 /L-dopa for C-C cross-coupling and oxidation reactions in aqueous medium', Molecular Catalysis, vol. 469, pp. 27-39. https://doi.org/10.1016/j.mcat.2019.02.023

APA

Sharma, H., Sharma, S., Sharma, C., Paul, S., & Clark, J. H. (2019). Magnetically recoverable graphene oxide supported Co@Fe 3 O 4 /L-dopa for C-C cross-coupling and oxidation reactions in aqueous medium. Molecular Catalysis, 469, 27-39. https://doi.org/10.1016/j.mcat.2019.02.023

Vancouver

Sharma H, Sharma S, Sharma C, Paul S, Clark JH. Magnetically recoverable graphene oxide supported Co@Fe 3 O 4 /L-dopa for C-C cross-coupling and oxidation reactions in aqueous medium. Molecular Catalysis. 2019 May 1;469:27-39. https://doi.org/10.1016/j.mcat.2019.02.023

Author

Sharma, Harsha ; Sharma, Shally ; Sharma, Chandan ; Paul, Satya ; Clark, James H. / Magnetically recoverable graphene oxide supported Co@Fe 3 O 4 /L-dopa for C-C cross-coupling and oxidation reactions in aqueous medium. In: Molecular Catalysis. 2019 ; Vol. 469. pp. 27-39.

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@article{5a273277a7d7497a865af097209b8037,
title = "Magnetically recoverable graphene oxide supported Co@Fe 3 O 4 /L-dopa for C-C cross-coupling and oxidation reactions in aqueous medium",
abstract = " We report the synthesis of inexpensive and environmentally benign cobalt(0) nanoparticles on L-3,4-dihydroxyphenylalanine (L-dopa) functionalized and magnetite (Fe 3 O 4 ) grafted graphene oxide (Co@GO/Fe 3 O 4 /L-dopa) which was fully characterized with different techniques such as Scanning Electron Microscopy (SEM), High Resolution Transmission Electron Microscopy (HR-TEM), X-Ray Photoelectron Spectroscopy (XPS), X-ray Powder Diffraction (XRD), Thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (FTIR), Vibrating Sample Magnetometer (VSM), Carbon Hydrogen Nitrogen (CHN) analysis, Energy Dispersive X-ray (EDX) and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). Graphene oxide was used as the core material due to its mechanical, electrical and thermal properties. In order to avoid the cumbersome process of separation, magnetite nanoparticles were coated over the graphene oxide. After the successful preparation of graphene oxide based magnetic nanoparticles, L-dopa was grafted over Fe 3 O 4 nanoparticles so as to provide firm anchoring agent for cobalt nanoparticles. Finally, cobalt(0) nanoparticles were immobilized on the developed magnetic support. The catalytic efficiency of the synthesized catalyst was tested for Suzuki cross-coupling and oxidation reactions, usually carried out by precious and expensive second and third row transition metals; products were obtained in good to excellent yields. The synthesized catalyst represents an attractive alternative to conventional catalysts for Suzuki cross-coupling and oxidation reactions, and is recyclable up to five runs. ",
keywords = "Cobalt nanoparticles, Graphene oxide, L-dopa, Magnetic nanoparticles, Oxidation reactions, Suzuki cross-coupling",
author = "Harsha Sharma and Shally Sharma and Chandan Sharma and Satya Paul and Clark, {James H.}",
note = "{\textcopyright} 2019 Elsevier B.V. All rights reserved. This is an author-produced version of the published paper. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. ",
year = "2019",
month = may,
day = "1",
doi = "10.1016/j.mcat.2019.02.023",
language = "English",
volume = "469",
pages = "27--39",
journal = "Molecular Catalysis",
issn = "2468-8231",
publisher = "Elsevier BV",

}

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TY - JOUR

T1 - Magnetically recoverable graphene oxide supported Co@Fe 3 O 4 /L-dopa for C-C cross-coupling and oxidation reactions in aqueous medium

AU - Sharma, Harsha

AU - Sharma, Shally

AU - Sharma, Chandan

AU - Paul, Satya

AU - Clark, James H.

N1 - © 2019 Elsevier B.V. All rights reserved. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - We report the synthesis of inexpensive and environmentally benign cobalt(0) nanoparticles on L-3,4-dihydroxyphenylalanine (L-dopa) functionalized and magnetite (Fe 3 O 4 ) grafted graphene oxide (Co@GO/Fe 3 O 4 /L-dopa) which was fully characterized with different techniques such as Scanning Electron Microscopy (SEM), High Resolution Transmission Electron Microscopy (HR-TEM), X-Ray Photoelectron Spectroscopy (XPS), X-ray Powder Diffraction (XRD), Thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (FTIR), Vibrating Sample Magnetometer (VSM), Carbon Hydrogen Nitrogen (CHN) analysis, Energy Dispersive X-ray (EDX) and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). Graphene oxide was used as the core material due to its mechanical, electrical and thermal properties. In order to avoid the cumbersome process of separation, magnetite nanoparticles were coated over the graphene oxide. After the successful preparation of graphene oxide based magnetic nanoparticles, L-dopa was grafted over Fe 3 O 4 nanoparticles so as to provide firm anchoring agent for cobalt nanoparticles. Finally, cobalt(0) nanoparticles were immobilized on the developed magnetic support. The catalytic efficiency of the synthesized catalyst was tested for Suzuki cross-coupling and oxidation reactions, usually carried out by precious and expensive second and third row transition metals; products were obtained in good to excellent yields. The synthesized catalyst represents an attractive alternative to conventional catalysts for Suzuki cross-coupling and oxidation reactions, and is recyclable up to five runs.

AB - We report the synthesis of inexpensive and environmentally benign cobalt(0) nanoparticles on L-3,4-dihydroxyphenylalanine (L-dopa) functionalized and magnetite (Fe 3 O 4 ) grafted graphene oxide (Co@GO/Fe 3 O 4 /L-dopa) which was fully characterized with different techniques such as Scanning Electron Microscopy (SEM), High Resolution Transmission Electron Microscopy (HR-TEM), X-Ray Photoelectron Spectroscopy (XPS), X-ray Powder Diffraction (XRD), Thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (FTIR), Vibrating Sample Magnetometer (VSM), Carbon Hydrogen Nitrogen (CHN) analysis, Energy Dispersive X-ray (EDX) and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). Graphene oxide was used as the core material due to its mechanical, electrical and thermal properties. In order to avoid the cumbersome process of separation, magnetite nanoparticles were coated over the graphene oxide. After the successful preparation of graphene oxide based magnetic nanoparticles, L-dopa was grafted over Fe 3 O 4 nanoparticles so as to provide firm anchoring agent for cobalt nanoparticles. Finally, cobalt(0) nanoparticles were immobilized on the developed magnetic support. The catalytic efficiency of the synthesized catalyst was tested for Suzuki cross-coupling and oxidation reactions, usually carried out by precious and expensive second and third row transition metals; products were obtained in good to excellent yields. The synthesized catalyst represents an attractive alternative to conventional catalysts for Suzuki cross-coupling and oxidation reactions, and is recyclable up to five runs.

KW - Cobalt nanoparticles

KW - Graphene oxide

KW - L-dopa

KW - Magnetic nanoparticles

KW - Oxidation reactions

KW - Suzuki cross-coupling

UR - http://www.scopus.com/inward/record.url?scp=85062478773&partnerID=8YFLogxK

U2 - 10.1016/j.mcat.2019.02.023

DO - 10.1016/j.mcat.2019.02.023

M3 - Article

AN - SCOPUS:85062478773

VL - 469

SP - 27

EP - 39

JO - Molecular Catalysis

JF - Molecular Catalysis

SN - 2468-8231

ER -