The phase stability of nanocrystalline anatase and rutile was analyzed thermodynamically. According to the present analysis, anatase becomes more stable than rutile when the particle size decreases below 14 nm. The calculated phase boundary between nanocrystalline anatase and rutile coincides with the experimental data for appearance of rutile during coarsening of nanocrystalline anatase. Both surface free energy and surface stress play important roles in the thermodynamic phase stability, which is a function of particle size.(more)
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%0 Journal Article
%1 Zhang1998
%A Zhang, Hengzhong
%A Banfield, Jillian F.
%D 1998
%I The Royal Society of Chemistry
%J J. Mater. Chem.
%K TiO2 anatase phase_transformation rutile thermodynamics
%N 9
%P 2073--2076
%T Thermodynamic analysis of phase stability of nanocrystalline titania
%U http://dx.doi.org/10.1039/A802619J
%V 8
%X The phase stability of nanocrystalline anatase and rutile was analyzed thermodynamically. According to the present analysis, anatase becomes more stable than rutile when the particle size decreases below 14 nm. The calculated phase boundary between nanocrystalline anatase and rutile coincides with the experimental data for appearance of rutile during coarsening of nanocrystalline anatase. Both surface free energy and surface stress play important roles in the thermodynamic phase stability, which is a function of particle size.
@article{Zhang1998,
abstract = {The phase stability of nanocrystalline anatase and rutile was analyzed thermodynamically. According to the present analysis, anatase becomes more stable than rutile when the particle size decreases below 14 nm. The calculated phase boundary between nanocrystalline anatase and rutile coincides with the experimental data for appearance of rutile during coarsening of nanocrystalline anatase. Both surface free energy and surface stress play important roles in the thermodynamic phase stability, which is a function of particle size.},
added-at = {2010-08-30T09:56:56.000+0200},
author = {Zhang, Hengzhong and Banfield, Jillian F.},
biburl = {https://www.bibsonomy.org/bibtex/2f83cea912095f458ff3f2a50e06a8796/pmd},
groups = {public},
interhash = {2509a5d99701994aaaa733307fe3a576},
intrahash = {f83cea912095f458ff3f2a50e06a8796},
issn = {09599428},
journal = {J. Mater. Chem.},
keywords = {TiO2 anatase phase_transformation rutile thermodynamics},
number = 9,
pages = {2073--2076},
publisher = {The Royal Society of Chemistry},
timestamp = {2011-09-27T11:21:23.000+0200},
title = {Thermodynamic analysis of phase stability of nanocrystalline titania},
url = {http://dx.doi.org/10.1039/A802619J},
username = {pmd},
volume = 8,
year = 1998
}