art conservation research thesis raman spectroscopy applied to iron oxide

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art conservation research thesis raman spectroscopy applied to iron oxide 35 Best Conservation Science images Art conservation 2015919&ensp·&enspConservation and …

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Surface-Enhanced Raman Spectroscopy Studies of Organic …

Surface-Enhanced Raman Spectroscopy Studies of Organic Dyes for Art Conservation and Ph Sensing Applications ... a review of the pedagogical journey in art conservation research through the lenses of undergraduates is offered in Chapter 2. Finally, an ... an oscillating field is applied which momentarily causes a distortion in the

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Raman Spectroscopy of Iron Oxide of Nanoparticles

Figura 4. Espectros Raman das NP óxido de ferro obtida em Diferentes lasers : 514 nm e 785 nm. Raman spectroscopy was employed to determine the nature of the iron oxide core (magnetite), where the Raman effect is caused by the molecular effects produced from certain energy irradiated on the sample. However, it is known that magnetite has a ...

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Raman and Surface-Enhanced Raman Spectroscopy Applied in Art Conservation

The identification is done with a limited but growing amount of reference spectra. Surface- enhanced Raman spectroscopy (SERS) is a powerful technique to measure components at low concentrations. There are currently developments in the field of Raman spectroscopy such as micro-Raman, micrometre-scale spatially offset Raman spectroscopy (micro ...

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Art Conservation Research: Thesis: Raman spectroscopy of …

Raman spectroscopy intrinsically probes chemical bonds and is therefore one of the few techniques that has been proven useful to provide information at the nanoscale. It is an excellent tool to study ceramics and glasses as a Raman spectrum can be used to identify phases, analyse amorphous domains in the silicate network and identify pigments ...

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Resonance Raman detection of antioxidants using an iron oxide ...

Nanozymes are metal nanoparticles with catalytic properties that can be used to oxidise peroxidase substrates giving a colorimetric response which can be detected using UV-vis, and recently, Raman spectroscopy. Due to their ease of synthesis and increased stability, nanozymes are being increasing in …

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Raman Spectroscopy of Iron Oxide Nanoparticles

5.7.2 Raman Spectroscopy of Magnetic Colloids in the Presence of Magnetic Field. Raman spectroscopy has been also applied to study the behavior of water-based MF samples containing surface-functionalized nanosized …

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Raman spectroscopy to unravel the magnetic properties of …

In this context, Raman spectroscopy is an invaluable and fast-performance tool to gain insight into the different phases forming part of the nanocrystals to be used, allowing correlation of the magnetic properties with the envisaged bio-related applications. 1. Introduction Iron oxide nanocrystals are ubiquitous in the eld of biomedi-

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Application of Raman spectroscopy to identify iron minerals …

This study employed Raman spectroscopy (laser power 0.1%) to characterize both synthetic and common natural iron-bearing mineral phases, including oxides (hematite, magnetite), hydroxides (ferrihydrite, goethite, lepidocrocite, akaganéite), carbonate (siderite), sulfate (Na-jarosite), and ferric arsenates (scorodite, yukonite), found in acid ...

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Raman and infrared spectroscopy in conservation and restoration

Raman and infrared (IR) spectroscopy, also called vibrational spectroscopies, are two of the most frequently used molecular techniques applied to cultural heritage objects including archeological artifacts and pieces of art. Their dynamics, abilities and potentials are extensively described in the scientific literature [1], [2].

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The Use of Raman Spectroscopy in Conservation - Academia.edu

Raman spectroscopy is an effective analytical method that is able to provide a unique understanding in the study and conservation of cultural heritage materials and artefacts. As mentioned previously, Raman spectroscopy can analyse a broad range of materials, in any state, in situ, non-destructively, and with minimal sample preparation.

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Raman spectroscopy of iron oxides and (oxy)hydroxides at low …

It is also shown that Raman spectroscopy is an easy method to distinguish magnetite and maghemite. Due to the low laser powers applied, a wuestite band at about 595 cm −1 could be established enabling a non-ambiguous identification of this mineral by its Raman spectrum. Furthermore, the potential of the method to investigate magnetic material ...

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Raman spectroscopy of iron oxides and (oxy)hydroxides at low …

1 Introduction. Raman spectroscopy is a fast tool to distinguish iron oxides, hydroxides and oxyhdroxides. The method has been used for the analysis of corrosion products (Oh et al. 1998; Thibeau et al. 1978) or oxide scales formed in production processes (Bhattacharya et al. 2006), the characterization of pigments in archaeological material (Clark & …

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Raman spectroscopy to unravel the magnetic properties of iron oxide ...

Raman spectroscopy plays its role when it comes to knowing the combination of oxides present in these clusters, which induces certain phase transitions. 13 Actually, the reaction mechanism behind the formation of the final material (Fe 3 O 4 and Mn 0.6 Fe 2.4 O 4) in the clusters was demonstrated using Raman spectroscopy (using a 785 nm ...

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Raman spectroscopy applied to iron oxide pigments from waste …

In the current study Raman spectroscopy was used as the primary technique during the study of chemical components in archaeological earthenware samples (i.e. low temperature fired clay pottery) of South African and Chinese origin, and characterisation of iron oxides derived from mill scale.

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Applications of Raman spectroscopy in art and archaeology

to clarify this important issue, arjonilla et al. 13 studied those polychrome plasterwork decorations using always raman microspectroscopy with complementary techniques: (a) dispersive x-ray fluorescence, to help in the identification of pigments and extenders, (b) scanning electron microscopy–energy dispersive x-ray spectroscopy, to gain …

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art conservation research thesis raman spectroscopy applied to …

Journal of Spectroscopy Hindawi . 20141028 ensp 0183 enspPottery samples from the Pompeii archaeological site were investigated by IR Raman spectroscopy and EDAX measurements The analysis of the Raman spectra of the surfaces reveals the presence calcium hydroxide peak at about 780 cm−1 while the calcium carbonate is totally absent The comparative studies on the …

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(PDF) Raman spectroscopy applied to iron oxide …

Unlike recipes R1 and R2, the iron compounds were not possible to identify through infrared spectroscopy and were identified by Raman …

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[Raman spectroscopic study on the iron oxide film prepared by iron …

Abstract. 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 Raman spectra.

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Raman Spectroscopy of Iron-Oxide Core-Corona Nanoparticles: …

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. Thermal treatment at 100–300°C results in the predominant formation of a Fe3O4 and γ-Fe2O3 …

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Raman spectroscopy to unravel the magnetic …

Raman spectroscopy plays its role when it comes to knowing the combination of oxides present in these clusters, which induces certain phase transitions. 13 Actually, the reaction mechanism behind the formation of the final material (Fe …

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(PDF) Raman spectroscopy applied to iron oxide …

PDF | On Sep 23, 2008, Malebogo Andries Legodi published Raman spectroscopy applied to iron oxide pigments from waste materials and earthenware archaeological objects | Find, read and cite all the ...

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Infrared and Raman spectroscopic studies on iron oxide …

The thermal conversions of iron oxide MNPs observed by Raman spectroscopy are in agreement with those observed in the infrared spectroscopic investigation. We have also collected Raman spectra of the coated oxide MNPs after annealing at 550 °C for 2.5 h and displayed these along with the spectrum of uncoated MNPs in Fig. 14 .

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University of Pretoria etd – Legodi, M A (2008) Raman …

Raman Spectroscopy Applied to Iron Oxide Pigments from Waste Materials and Earthenware Archaeological Objects . by . Malebogo Andries Legodi . Submitted in partial fulfillment of the degree . PHILOSOPHIAE DOCTOR . in . CHEMISTRY . in the faculty of Natural and Agricultural Sciences of the . UNIVERSITY OF PRETORIA . PRETORIA . Promoter: Prof. D ...

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art conservation research thesis raman spectroscopy applied to iron oxide

Journal of Spectroscopy Hindawi. 20141028 ensp 0183 enspPottery samples from the Pompeii archaeological site were investigated by IR Raman spectroscopy and EDAX measurements The analysis of the Raman spectra of the surfaces reveals the presence calcium hydroxide peak at about 780 cm−1 while the calcium carbonate is totally absent The comparative studies on the …

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art conservation research thesis raman spectroscopy applied to …

The thermal conversions of iron oxide MNPs observed by Raman spectroscopy are in agreement with those observed in the infrared spectroscopic investigation. We have also collected Raman spectra of the coated oxide MNPs after annealing at 550 °C for 2.5 h and displayed these along with the spectrum of uncoated MNPs in Fig. 14 .

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Applications of Raman Spectroscopy - University of Waterloo

This thesis is devoted to exploring experimental applications of Raman spectroscopy. The ability of Raman spectroscopy to investigate the vibrational modes of a molecule was explored in several studies. The work included using Raman spectroscopy to examine the molecular con guration of proteins, the relative amounts of certain molecules present in

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[Raman spectroscopic study on the iron oxide film …

PMID: 15762525 Abstract 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 Raman spectra.

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Raman and FTIR spectroscopy applied to the conservation …

In this work, a methodology was determined for the analysis of these damages by the use of Raman and infrared spectroscopy. The infrared and Raman signatures of a large set of iron sulfates were characterized. Specific attention was paid to sideronatrite and ferrinatrite, which are two associated sodium/iron(III) sulfates, and their infrared ...

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(PDF) Raman Spectroscopy to unravel Magnetic …

Iron oxide nanocrystals have become a versatile tool in biomedicine by presenting low cytotoxicity while offering a wide range of tuneable magnetic properties that may be implemented in magnetic ...

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Application of Raman spectroscopy to identify iron minerals …

1. Introduction. Raman spectroscopy is used to identify a wide variety of minerals and, in some instances, to provide chemical and structural information (Griffith, 1969, Pérez and Martinez-Frias, 2006).Some of this information can be obtained using other analytical tools, including X-ray diffraction (XRD), infrared (IR) spectroscopy, or Fourier transform IR …

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Surface- and tip-enhanced Raman spectroscopy reveals spin-waves in iron ...

In this context the Raman spectra due to plasmonic enhancement of iron oxide nanocrystals are here reported showing the activation of spin-waves. Iron oxide nanoparticles on gold and silver tips are found to display a band around 1584 cm( …