Determination of Phase Ratio in Polymorphic Materials by X-Ray Absorption Spectroscopy: The Case of Anatase and Rutile Phase Mixture in TiO2

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3065988· OSTI ID:1023066

Smith, M F; Klysubun, W; Kityakarn, S; Worayingyong, A; Zhang, S B; Wei, S H; Onkaw, D; Songsiriritthigul, P; Rujirawat, S; Limpijumnong, S

We demonstrate that x-ray absorption spectroscopy (XAS) can be used as an unconventional characterization technique to determine the proportions of different crystal phases in polymorphic samples. As an example, we show that ratios of anatase and rutile phases contained in the TiO{sub 2} samples obtained by XAS are in agreement with conventional x-ray diffraction (XRD) measurements to within a few percent. We suggest that XAS measurement is a useful and reliable technique that can be applied to study the phase composition of highly disordered or nanoparticle polymorphic materials, where traditional XRD technique might be difficult.

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1023066
• Journal Information: Journal of Applied Physics, Vol. 105, Issue 2, 2009; Related Information: Article No. 024308; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTROSCOPY
MIXTURES
RUTILE
X-RAY DIFFRACTION
Basic Sciences