raman spectroscopy of iron oxide of nanoparticles fe3o4

  • Surface Enhanced Raman Spectroscopy of Organic Molecules

    2015-2-24 · Surface-enhanced Raman spectroscopy (SERS) of species bound to environmentally relevant oxide nanoparticles is largely limited to organic molecules structurally related to catechol that facilitate a chemical enhancement of the Raman signal. Here we report that magnetite (Fe3O4) nanoparticles provide a SERS signal from oxalic acid and cysteine via an electric field enhancement.

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  • Raman spectroscopy of iron oxides and (oxy)hydroxides at

    2009-5-13 · Raman spectroscopy of iron oxides and (oxy)hydroxides at low laser power and possible applications in environmental magnetic studies Jyrki M. Mäkelä Controlling the phase of iron oxide nanoparticles fabricated from iron(III) nitrate by liquid flame spray International Journal of Ceramic Engineering Partial FeO–Fe3O4 Phase

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  • Microwave-assisted synthesis of iron oxide nanoparticles

    2017-10-13 · Iron oxide nanoparticles have triggered the interest of the research community and industry due to their great variety of applications. Iron oxide nanoparticles with magnetite (Fe 3 O 4) and maghemite (γ-Fe 2 O 3) playing the leading role find great use in pharmacy and nanomedicine and are used in cell separation 1 1. Q.

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  • Raman Spectroscopy of Iron-Oxide Core-Corona Nanoparticles

    2020-12-15 · Thermal treatment at 100–300°C results in the predominant formation of a Fe3O4 and γ-Fe2O3 mixture with a small amount of α-Fe2O3 on the surface of the iron particles while annealing at higher temperatures results in further oxidation of iron as well as phase transformation of Fe3O4 and γ-Fe2O3 phase transformation to the most thermodynamically stable form of iron oxide α-Fe2O3.

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  • Iron Oxide Nanoparticles Multiwall Carbon Nanotube

    2021-2-10 · Hence the composite material combines the properties of carbon nanotubes and magnetic nanoparticles. X-ray photoelectron spectroscopy which is a very surface sensitive method shows the attachment of iron oxide to cCNTs (Additional file 1 Fig. S2).Here magnetite and/or maghemite are present since the F 2p 3/2 band of the cCNT-SPIONs shows a maximum at 711 eV and the Fe 2p 1/2

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  • Obtention by Coprecipitation and Magnetic Characterization

    2015-10-15 · Magnetic nanoparticles of iron oxide are synthesized into coated with polyethylene glycol and oleic acid from the simultaneous precipitation of ions Fe 2 and Fe 3 in alkaline solution (NH 4 OH). The iron oxide magnetite has the characteristics according to Raman spectroscopy and XRD. The presence of the coating was confirmed by FTIR.

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  • Surface Enhanced Raman Spectroscopy of Organic Molecules

    2015-2-24 · Here we report that magnetite (Fe3O4) nanoparticles provide a SERS signal from oxalic acid and cysteine via an electric field enhancement. Magnetite thus likely provides an oxide substrate for SERS study of any adsorbed organic molecule.

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  • Green Synthesis of Spinel Magnetite Iron Oxide Nanoparticles

    Spinel magnetite Fe3O4 nanoparticles were synthesized using rambutan peel waste extract as a green ligation and chelating agent. The green synthesized nanoparticles were characterized employing X-ray diffraction (XRD) Raman spectroscopy FTIR spectroscopy and transmission electron microscopy (TEM) studies. The XRD study revealed spinel phase hda a magnetite structure.

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  • Raman spectroscopic study on the iron oxide film prepared

    Micro-Raman spectroscopy was used to investigate the chemical composition microstructure and crystalline phase of an iron oxide sample with three-layer macro-structure prepared by iron oxidation. Two laser lines of 514 and 633 nm with a power of 0.5 mW on the sample were employed to excite the Rama

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  • Raman spectroscopy of iron oxides and (oxy)hydroxides at

    2009-5-13 · Raman spectroscopy of iron oxides and (oxy)hydroxides at low laser power and possible applications in environmental magnetic studies Jyrki M. Mäkelä Controlling the phase of iron oxide nanoparticles fabricated from iron(III) nitrate by liquid flame spray International Journal of Ceramic Engineering Partial FeO–Fe3O4 Phase

    Chat Online
  • Green Synthesis of Spinel Magnetite Iron Oxide Nanoparticles

    Spinel magnetite Fe3O4 nanoparticles were synthesized using rambutan peel waste extract as a green ligation and chelating agent. The green synthesized nanoparticles were characterized employing X-ray diffraction (XRD) Raman spectroscopy FTIR spectroscopy and transmission electron microscopy (TEM) studies. The XRD study revealed spinel phase hda a magnetite structure.

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  • Raman Spectroscopy of Iron-Oxide Core

    2020-12-16 · Abstract The morphology and composition of metal–oxide coronaparticles after the thermal oxidation of iron particles within the temperature range of 25–600°C under atmospheric conditions were investigated by in situ Raman-scattering spectroscopy.

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  • Vibrational properties of nanoparticles iron oxide by

    The crystal structure and atomic dynamics of Fe 3 O 4 nanoparticles have been studied. The crystal structure of iron oxide nanoparticles was determined by X-ray diffraction. The analysis showed that the crystal structure of d ≈ 50-100 nm dimensional iron oxide corresponds to a

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  • Spectroscopic and Microscopic Analyses of Fe3O4 Au

    2020-1-10 · Nanomaterials 2020 10 132 2 of 13 of iron and silver 23 and of nickel and silver 24 were employed to obtain magneto-plasmonic colloidal nanoparticles. Here we propose the fabrication of bifunctional Fe3O4/Au nanoparticles obtained by the two-step laser ablation of iron and gold targets in water along with microscopic and spectroscopic

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  • Microwave-assisted synthesis of iron oxide nanoparticles

    2017-10-13 · Iron oxide nanoparticles have triggered the interest of the research community and industry due to their great variety of applications. Iron oxide nanoparticles with magnetite (Fe 3 O 4) and maghemite (γ-Fe 2 O 3) playing the leading role find great use in pharmacy and nanomedicine and are used in cell separation 1 1. Q.

    Chat Online
  • Spectroscopic and Microscopic Analyses of Fe3O4/Au

    Magneto-plasmonic nanoparticles constituted of gold and iron oxide were obtained in an aqueous environment by laser ablation of iron and gold targets in two successive steps. Gold nanoparticles are embedded in a mucilaginous matrix of iron oxide which was identified as magnetite by both microscopic and spectroscopic analyses. The plasmonic properties of the obtained colloids as well as their

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  • Raman Spectroscopy of Iron-Oxide Core

    2020-12-16 · Raman Spectroscopy of Iron-Oxide Core-Corona Nanoparticles Effect of Synthesis Protection of Metals and Physical Chemistry of Surfaces ( IF 0.985) Pub Date 2020-12-15 DOI 10.1134 V. A. Kotenev Abstract

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  • Raman spectroscopy of iron oxide of nanoparticles (Fe3O4)

    Raman spectroscopy of iron oxide of nanoparticles (Fe3O4) 4 th International Conference and Exhibition on Materials Science Engineering September 14-16 2015 Orlando USA. Panta P C and Bergmann C P. Federal University of Rio Grande do Sul Brazil Posters-Accepted Abstracts J

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  • Automated droplet reactor for the synthesis of iron oxide

    2020-2-3 · Finally applications of the iron oxide/gold core-shell nanoparticles were demonstrated for Surface Enhanced Raman Spectroscopy (SERS) photothermal therapy and

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  • Optimization of oleylamine-Fe3O4/MWCNTs nanocomposite

    Iron oxide (Fe3O4) nanoparticles are prepared by nucleation method using oleylamine (OLA) as the capping agent. The OLA capped Fe3O4 nanoparticles (OLA-Fe3O4) are characterized by Fourier Transform Infrared (FT-IR) spectroscopy X-ray Diffraction (XRD) and High Resolution Transmission Electron Microscopic (HRTEM) analysis.

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  • Obtention by Coprecipitation and Magnetic Characterization

    2015-10-15 · Magnetic nanoparticles of iron oxide are synthesized into coated with polyethylene glycol and oleic acid from the simultaneous precipitation of ions Fe 2 and Fe 3 in alkaline solution (NH 4 OH). The iron oxide magnetite has the characteristics according to Raman spectroscopy and XRD. The presence of the coating was confirmed by FTIR.

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  • Thermodynamic Properties of α-Fe2O3 and Fe3O4

    2015-4-21 · Abstract. Here we comprehansively assessed the thermodynamic properties of hydrated α-Fe 2 O 3 (hematite) and Fe 3 O 4 (magnetite) nanoparticles. In addition to 9 nm Fe 3 O 4 three α-e 2 O 3 nanoparticles samples of different sizes (11 14 and 25 nm) and bulk α-e 2 O 3 have been evaluated by inelastic neutron scattering methods. The contribution of the two-level magnetic spin flip

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  • Iron Oxide Nanoparticles Multiwall Carbon Nanotube

    2021-2-10 · Hence the composite material combines the properties of carbon nanotubes and magnetic nanoparticles. X-ray photoelectron spectroscopy which is a very surface sensitive method shows the attachment of iron oxide to cCNTs (Additional file 1 Fig. S2).Here magnetite and/or maghemite are present since the F 2p 3/2 band of the cCNT-SPIONs shows a maximum at 711 eV and the Fe 2p 1/2

    Chat Online
  • Control of the shape and size of iron oxide (α-Fe2O3

    2017-1-1 · Similar results have been reported with α-Fe 2 O 3 nanoparticles Indeed Xu et al. used Raman spectrum to explore the nanoparticles of α-Fe 2 O 3 synthesized by oxygenating pure iron and identified A 1g (225 498 cm −1) E g (252 293 411 612 cm −1).

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  • Spectroscopic investigation on the interaction of DNA

    2021-7-9 · M. Mehdipour et al. / interaction of DNA with superparamagnetic iron oxide nanoparticles Fe-O stretching of the iron oxide nanoparticles (Fig 4a). The broad band at 3423 cm-1 ascribed to the vibration of the hydroxyl groups and/or absorbed water molecules on the surface of the particles 24 . The spectrum of SPIONs DA-Chr exhibit

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  • Real-Time and Tunable Substrate for Surface Enhanced Raman

    2017-8-10 · Sardari B. Özcan M. Real-Time and Tunable Substrate for Surface Enhanced Raman Spectroscopy by Synthesis of Copper Oxide Nanoparticles via Electrolysis. Sci Rep 7

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  • Vibrational properties of nanoparticles iron oxide by

    The crystal structure and atomic dynamics of Fe 3 O 4 nanoparticles have been studied. The crystal structure of iron oxide nanoparticles was determined by X-ray diffraction. The analysis showed that the crystal structure of d ≈ 50-100 nm dimensional iron oxide corresponds to a

    Chat Online
  • Spectroscopic and Microscopic Analyses of Fe3O4 Au

    2020-1-10 · Nanomaterials 2020 10 132 2 of 13 of iron and silver 23 and of nickel and silver 24 were employed to obtain magneto-plasmonic colloidal nanoparticles. Here we propose the fabrication of bifunctional Fe3O4/Au nanoparticles obtained by the two-step laser ablation of iron and gold targets in water along with microscopic and spectroscopic

    Chat Online
  • Automated droplet reactor for the synthesis of iron oxide

    2020-2-3 · Finally applications of the iron oxide/gold core-shell nanoparticles were demonstrated for Surface Enhanced Raman Spectroscopy (SERS) photothermal therapy and

    Chat Online
  • Low Temperature Synthesis of Superparamagnetic Iron Oxide

    2018-11-5 · In the present study a facile environmentally friendly approach was described to prepare monodisperse iron oxide (Fe3O4) nanoparticles (IONPs) by low temperature solution route. The synthesized nanoparticles were characterized using x-ray diffraction spectroscopy (XRD) Raman spectroscopy field emission scanning electron microscopy (FESEM) measurements Fourier

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  • Iron Oxide NanoparticlesIntechOpen

    2018-9-25 · 3 Iron Oxide Nanoparticles Mohammed M. Rahman 1 Sher Bahadar Khan 1 2 Aslam Jamal 3 Mohd Faisal 3 and Abdullah M. Aisiri 1 2 1The Center of Excellence for Advanced Materials Research Kin g Abdulaziz University Jeddah 2Chemistry Department Faculty of Scienc e King Abdulaziz University Jeddah 3Centre for Advanced Materials and Nano-Engineering (CAMNE)

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  • Spectroscopic and Microscopic Analyses of Fe3O4 Au

    2020-1-10 · Nanomaterials 2020 10 132 2 of 13 of iron and silver 23 and of nickel and silver 24 were employed to obtain magneto-plasmonic colloidal nanoparticles. Here we propose the fabrication of bifunctional Fe3O4/Au nanoparticles obtained by the two-step laser ablation of iron and gold targets in water along with microscopic and spectroscopic

    Chat Online
  • Vibrational properties of nanoparticles iron oxide by

    2021-3-5 · The crystal structure and atomic dynamics of Fe 3 O 4 nanoparticles have been studied. The crystal structure of iron oxide nanoparticles was determined by X-ray diffraction. The analysis showed that the crystal structure of d ≈ 50–100 nm dimensional iron oxide corresponds to a

    Chat Online
  • Control of the shape and size of iron oxide (α-Fe2O3

    2017-1-1 · No other iron oxide such as magnetite or maghemite was detected which indicates the high purity of the product. Similar results have been reported with α-Fe 2 O 3 nanoparticles 39 Indeed Xu et al. 40 used Raman spectrum to explore the nanoparticles of α-Fe 2 O 3 synthesized by oxygenating pure iron and identified A 1g (225 498 cm −1 ) E g (252 293 411 612 cm −1 ).

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  • Functionalization of Fe3O4 SiO2 magnetic nanoparticles

    Then Fe3O4 SiO2 MNPs were functionalized with an antioxidant drug namely "nicotinamide" to obtain new water-soluble magnetic nanoparticles for biological applications. The MNPs were subsequently characterized by X-ray diffraction (XRD) Fourier transform infrared (FT-IR) spectroscopy and transmission electron microscopy (TEM) analyses.

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  • Spectroscopic and Microscopic Analyses of Fe3O4/Au

    Magneto-plasmonic nanoparticles constituted of gold and iron oxide were obtained in an aqueous environment by laser ablation of iron and gold targets in two successive steps. Gold nanoparticles are embedded in a mucilaginous matrix of iron oxide which was identified as magnetite by both microscopic and spectroscopic analyses. The plasmonic properties of the obtained colloids as well as their

    Chat Online
  • Raman Spectroscopy of Iron-Oxide Core

    2020-12-16 · Abstract The morphology and composition of metal–oxide coronaparticles after the thermal oxidation of iron particles within the temperature range of 25–600°C under atmospheric conditions were investigated by in situ Raman-scattering spectroscopy.

    Chat Online
  • Low Temperature Synthesis of Superparamagnetic Iron Oxide

    2018-11-5 · In the present study a facile environmentally friendly approach was described to prepare monodisperse iron oxide (Fe3O4) nanoparticles (IONPs) by low temperature solution route. The synthesized nanoparticles were characterized using x-ray diffraction spectroscopy (XRD) Raman spectroscopy field emission scanning electron microscopy (FESEM) measurements Fourier

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