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Raman investigation of nanosized TiO 2
Author(s) -
Gotić M.,
Ivanda M.,
Popović S.,
Musić S.,
Sekulić A.,
Turković A.,
Furić K.
Publication year - 1997
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/(sici)1097-4555(199707)28:7<555::aid-jrs118>3.0.co;2-s
Subject(s) - brookite , crystallite , raman spectroscopy , anatase , materials science , scherrer equation , rutile , raman scattering , analytical chemistry (journal) , phase (matter) , powder diffraction , wavenumber , diffraction , chemical engineering , mineralogy , crystallography , chemistry , optics , photocatalysis , chromatography , metallurgy , organic chemistry , physics , engineering , catalysis
Nanosized TiO 2 was prepared using the sol–gel procedure. The prepared powder was thermally treated up to 1000°C. X‐ray diffraction (XRD) measurements showed that the starting powder and the samples obtained after heating this powder up to 500°C were mixtures of anatase, as the dominant phase, and brookite. The crystallite sizes of the samples were estimated using the Scherrer equation. A new approach to the size determination of nanosized TiO 2 , by low‐wavenumber Raman scattering, was also applied. The particle sizes, determined by low‐wavenumber Raman scattering, were in agreement with the crystallite sizes measured by XRD. Rutile was produced by heat treatment of the starting powder at 850°C and higher temperatures. © 1997 John Wiley & Sons Ltd.