Abstract
The morphological and structural characteristics of nanostructure rutile TiO2 were investigated by using x-ray diffraction, scanning electron microscopy, electron diffraction, conventional and high resolution transmission electron microscopy. As a product of the precursor template of hydrogen titanate nanofibers, rutile could exhibit forms like tree, sheaf, or bundle. Both the branch and trunk of tree-like rutile have the same growth axis of [001]. The sheaf-like rutile forms while it grows along both [001] and [\( 00\bar{1} \)] directions. The bundle-like rutile grows along only one [001] direction. Tree-like morphology of nanocrystals rutile is revealed to be controlled by (101) twin structure. Twin formation is a possible mechanism to decrease the density of defects and reduce the system energy as the crystal grows.
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This study was financially supported by the financial supports by the Guangdong Science and Technology Project under Grant No. 2012B010200047, the Jiangmen Science and Technology Project.
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Huang, YS., Liu, HW. Growth Morphologies of Nanostructured Rutile TiO2 . J. of Materi Eng and Perform 23, 1240–1246 (2014). https://doi.org/10.1007/s11665-014-0895-x
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DOI: https://doi.org/10.1007/s11665-014-0895-x