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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Computational Simulations of Morphological Transformations by Surface Structures: The Case of Rutile TiO2 phase

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Author(s):
Matheus de Aquino Barbosa ; Guilherme da Silva Lopes Fabris ; Mateus Meneghetti Ferrer ; Douglas Henrique Marcelino de Azevedo ; Julio Ricardo Sambrano
Total Authors: 5
Document type: Journal article
Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 20, n. 4, p. -, Ago. 2017.
Abstract

Computational simulations based on periodic density functional theory have been carried out to investigate the control of crystal morphology by accurate values of surface energies by Wulff theorem. This method can be used as a very useful tool for the design and knowledge of synthesis of new materials. In a special case, rutile TiO2 phase, exhibits great variety of morphologies and properties making this system an interesting target for this approach. The low index, (100), (001), (101), (110), (111) surfaces were modeled and the respective surface energies produces the follows stability order: (110) < (010) < (101) < (001) < (111). The map of some morphologies routes was constructed from the calculated energies as a starting point without environmental influence and can be used to elucidate the influence of chemical routes. This method has helped in the knowledge of morphological modifications as a function of synthesis environment besides the connection between system characteristics and the exposed surfaces. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 13/19289-0 - Redox reactions of gases by the catalyst TiO2 with Cerium-doped atoms: a computational study
Grantee:Julio Ricardo Sambrano
Support type: Regular Research Grants
FAPESP's process: 16/07476-9 - Porous nanotubes of carbon and inorganic semiconductors: a computational study
Grantee:Julio Ricardo Sambrano
Support type: Regular Research Grants