Micro-Raman spectroscopic characterization of nanosized TiO2 powders prepared by vapor hydrolysis

Yun Hong Zhang, Chak K. Chan, John F. Porter, Wei Guo

Research output: Contribution to journalArticlepeer-review

160 Scopus citations

Abstract

Micro-Raman analysis was used to study the structure of TiO2 powders produced at low (260°C) and high (600-900°C) temperatures by vapor hydrolysis of titanium tetraisopropoxide (TTIP). Spatial inhomogeneity was discovered after the amorphous TiO2 powders produced at low temperature were calcined at 700, 800, and 900°C for 3 h. The TiO2 powders produced at high temperatures (from 600 to 900°C) were found to be spatially homogeneous and predominately anatase in structure. Small amounts of rutile and brookite are found for powders produced at 700, 800, and 900°C after calcination at 600°C for 3 h. The rutile and brookite impurities are believed to be concentrated on the surface of anatase based on a comparison of results of Raman and x-ray diffraction studies.
Original languageEnglish (US)
Pages (from-to)2602-2609
Number of pages8
JournalJournal of Materials Research
Volume13
Issue number9
DOIs
StatePublished - Jan 1 1998
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-07-06

ASJC Scopus subject areas

  • Mechanics of Materials
  • General Materials Science
  • Mechanical Engineering
  • Condensed Matter Physics

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