Surface energy effects on the stability of anatase and rutile nanocrystals: A predictive diagram for Nb2O5-doped-TiO2
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- 作者：Andre Luiz da Silvaa ; Dachamir Hotzaa ; Ricardo H.R. Castrob ; rhrcastro@ucdavis.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Titanium dioxide ; Anatase ; Rutile ; Surface energy ; Enthalpy ; Phase diagram ; Nanoparticles
- 刊名：Applied Surface Science
- 出版年：2017
- 出版时间：30 January 2017
- 年：2017
- 卷：393
- 期：Complete
- 页码：103-109
- 全文大小：1496 K
文摘
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Anatase-rutile phase transition diagram was built for nano Nb2O5-doped-TiO2.
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Nb2O5-doping postpones the anatase-to-rutile transition.
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The stability crossover for TiO2 was 17.3 nm, for 2 mol% Nb2O5-doped-TiO2 ∼30 nm.
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The surface energy for Nb2O5-doped-TiO2 decreases systematically with Nb concentration.
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