Structural and Electromagnetic Signatures of Anatase and Rutile NTs and Sheets in Three Different Water Models under Different Temperature Conditions
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Structural and Electromagnetic Signatures of Anatase and Rutile NTs and Sheets in Three Different Water Models under Different Temperature ConditionsDate
2023-10-04Citation
Ruiz, E.P.E.; Thirumuruganandham, S.P.; Lago, J.C.L. Structural and Electromagnetic Signatures of Anatase and Rutile NTs and Sheets in Three Different Water Models under Different Temperature Conditions. Int. J. Mol. Sci. 2023, 24, 14878. https://doi.org/10.3390/ijms241914878
Abstract
[Abstract] Experimental studies of TiO2 nanotubes have been conducted for nearly three decades and have revealed the remarkable advantages of this material. Research based on computer simulations is much rarer, with research using density functional theory (DFT) being the most significant in this field. It should be noted, however, that this approach has significant limitations when studying the macroscopic properties of nanostructures such as nanosheets and nanotubes. An alternative with great potential has emerged: classical molecular dynamics simulations (MD). MD Simulations offer the possibility to study macroscopic properties such as the density of phonon states (PDOS), power spectra, infrared spectrum, water absorption and others. From this point of view, the present study focuses on the distinction between the phases of anatase and rutile TiO2. The LAMMPS package is used to study both the structural properties by applying the radial distribution function (RDF) and the electromagnetic properties of these phases. Our efforts are focused on exploring the effect of temperature on the vibrational properties of TiO2 anatase nanotubes and an in-depth analysis of how the phononic softening phenomenon affects TiO2 nanostructures to improve the fundamental understanding in different dimensions and morphological configurations. A careful evaluation of the stability of TiO2 nanolamines and nanotubes at different temperatures is performed, as well as the adsorption of water on the nanosurface of TiO2, using three different water models.
Keywords
Antase
Rutile
Radial distribution function (RDF)
Matsui and Akaogi
PDOS
Low frequency
Power spectra
Infrared spectra
Soft phonon effect
Nanotubes
Nanosheets
LAMMPSMD
Rutile
Radial distribution function (RDF)
Matsui and Akaogi
PDOS
Low frequency
Power spectra
Infrared spectra
Soft phonon effect
Nanotubes
Nanosheets
LAMMPSMD
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Rights
Creative Commons License Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
ISSN
1422-0067