First-principles study on the surface energies of rutile TiO2(110) vs (011)-2×1 surfaces

Feng Yuan, Shi Xiang Lu, Wen Guo Xu, Hai Feng Zhang, Tao Ning

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

First-principles calculations based on density functional theory have been used to study the surface energies of the rutile TiO2(110) and (011)-2×1 surfaces. We investigate the effect of the slab thickness on the predicted surface energy and find that slab thicknesses of at least 5 layers are necessary to converge the surface energy to within 0.01 J/m2 for both rutile TiO2(110) and (011)-2×1 surfaces. For the rutile TiO2(110) surface, it should be noted that the surface energy oscillates with the number of layers (odd-even oscillations). However, the calculated surface energies of the rutile TiO2(011)-2×1 surface are closer to the linear relationship for the number of layers larger than 4. Finally, our calculated results indicate that the rutile TiO2(011)-2×1 surface has a significantly higher surface energy than the rutile TiO2(110) surface.

Original languageEnglish
Title of host publicationMaterial Science and Environmental Engineering
PublisherTrans Tech Publications
Pages113-117
Number of pages5
ISBN (Print)9783038351009
DOIs
Publication statusPublished - 2014
Event2nd International Conference on Material Science and Environmental Engineering, MSEE 2014 - Changsha, Hunan, China
Duration: 21 Mar 201423 Mar 2014

Publication series

NameAdvanced Materials Research
Volume937
ISSN (Print)1022-6680

Conference

Conference2nd International Conference on Material Science and Environmental Engineering, MSEE 2014
Country/TerritoryChina
CityChangsha, Hunan
Period21/03/1423/03/14

Keywords

  • Density functional theory
  • Surface energy

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