View : 28 Download: 0

Existence of nanoparticles in azurite and malachite pigments - Raman spectroscopy and X-ray diffraction studies

Title
Existence of nanoparticles in azurite and malachite pigments - Raman spectroscopy and X-ray diffraction studies
Authors
Han, KiokNam, Ji-YeonJi, Jeong-EunKang, DaiIllLee, HanhyoungBaek, NayeonSong, YounaYang, In-Sang
Ewha Authors
양인상
SCOPUS Author ID
양인상scopus
Issue Date
2016
Journal Title
DYES AND PIGMENTS
ISSN
0143-7208JCR Link1873-3743JCR Link
Citation
vol. 133, pp. 232 - 237
Keywords
Raman spectroscopyX-ray diffractionMineral pigmentNanoparticlesNondestructive measurements
Publisher
ELSEVIER SCI LTD
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The lightness of the color of mineral pigments changes with its particle size. We investigated the Raman spectra of azurite pigments of several particle-size groups, ranging from similar to 5 to similar to 110 mu m. The line-widths of the phonon modes similar to 400 cm(-1) of azurite powders were found to increase as the particle sizes get smaller. Similar phenomena were also observed for the malachite pigments. The broadening of phonon modes implies the existence of nanoparticles in the pigment powder. Scanning Electron Microscopy (SEM) measurements confirm the existence of more nanoparticles in the finer particle-size groups. These results were assured by X-ray diffraction (XRD) measurements as well. Even further, we could determine the average size of azurite particles simply by comparing the line-width of the Raman mode similar to 400 cm(-1) of the unknown with that of the known particle-size groups. Non-destructive estimation of typical sizes of mineral pigments using Raman spectroscopy could be useful in cultural-heritage conservation science. (C) 2016 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.dyepig.2016.06.004
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE