Journal of Nanotechnology / 2008 / Article / Tab 1

Research Letter

Analysis of Polymorphic Nanocrystals of T i O 2 by X-Ray Rietveld Refinement and High-Resolution Transmission Electron Microscopy: Acetaldehyde Decomposition

Table 1

DRX-Rietveld refinement, phase concentration, and crystal size of the sol-gel Ti O 2 samples.

SampleStructurePhase (%)Crystal size (nm)Scherrer crystal size (nm)Phasea (nm)b (nm)c (nm)

Ti O 2 -P200Tetragonal62.886.97.03Anatase0.37909260.37909260.9495732
Orthorhombic37.12 6.0 18.26 Brookite 0.9167624 0.5416461 0.5210546

Ti O 2 -P500Tetragonal82.6720.522.04Anatase0.37861670.37861670.9506104
Orthorhombic14.9013.134.02Brookite0.91425670.54420680.5191934
Monoclinic2.4334.727.14Rutile0.45913370.45913370.2951845

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