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Synthesis, morpho-structural properties, and catalytic performances of Pt-APA@Fe3O4/GO nanocomposite based on magnetical graphene in C–C coupling reactions and photoinactivation of E. coli

Moniriyan, F ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1007/s11051-021-05278-2
  3. Publisher: Springer Science and Business Media B.V , 2021
  4. Abstract:
  5. Herein, a novel Pt-APA composite (APA = pyridinium bromide salt) based on magnetic graphene oxide was synthesized and used as an effective catalyst. In this way, Fe3O4 nanoparticles are grown on graphene oxide (GO) nanosheets by a simple and practical method which creates a unique nanostructure (Fe3O4/GO) through dispersing uniformly among graphene nanosheets. The resulted Pt-APA composite was obtained via adding PtCl2 to an ethanol solution of Fe3O4/GO and α-keto stabilized pyridinium ylide in related conditions. The synthesized nanocomposite structure was identified using field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy dispersive spectral analysis (EDS), inductively coupled plasma spectrometry (ICP-MS), powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR), vibrating-sample magnetometer (VSM), and UV − Vis spectroscopy. To investigate the catalytic properties of the synthesized Pt-APA@Fe3O4/GO nanocomposite, it was firstly used as an efficient nano-magnetic catalyst in C–C cross-coupling reaction, Suzuki–Miyaura, with excellent results. Second, the Pt-APA@Fe3O4/GO nanocomposite has been used as a magnetic photocatalyst to inactivate E. coli bacteria on a nutrient agar plate under visible light irradiation, which showed excellent results. By examining the results, the antibacterial durability of nanocomposites Pt-APA@GO/Fe3O4 related to Fe3O4/GO shows a more significant inhibition against bacteria cell in both dark and visible light. Graphical abstract: In this study a novel pyridinium complex-functionalized magnetic graphene oxide composite was synthesized and used in photoinactivation of Escherichia coli bacteria under visible light irradiation. It was also used as a promising catalyst in Suzuki–Miyaura C–C coupling reaction. The nanocomposite was characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy dispersive spectral analysis (EDS), powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Inductively coupled plasma mass spectrometry (ICP-MS), UV − vis spectroscopy and vibrating-sample magnetometer (VSM). [Figure not available: see fulltext.]. © 2021, The Author(s), under exclusive licence to Springer Nature B.V
  6. Keywords:
  7. Chlorine compounds ; Electron emission ; Electrons ; Enamels ; Escherichia coli ; Field emission ; Field emission microscopes ; Graphene ; High resolution transmission electron microscopy ; Inductively coupled plasma ; Inductively coupled plasma mass spectrometry ; Iron oxides ; Irradiation ; Light ; Magnetism ; Magnetite ; Magnetometers ; Mass spectrometers ; Nanocatalysts ; Nanocomposites ; Nanosheets ; Platinum compounds ; Scanning electron microscopy ; Spectrum analysis ; Transmissions ; Uranium metallography ; X ray diffraction ; Escherichia coli bacteria ; Field emission scanning electron microscopy ; Fourier transform infrared ; Graphene oxide nanosheet ; Inductively coupled plasma mass spectrometries (ICPMS) ; Inductively coupled plasma spectrometry ; Vibrating sample magnetometer ; Visible-light irradiation ; Vanadium metallography
  8. Source: Journal of Nanoparticle Research ; Volume 23, Issue 8 , 2021 ; 13880764 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s11051-021-05278-2