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Ultraviolet irradiation confers titanium oxide oleophilicity.
- Source :
- Journal of Materials Science; Mar2023, Vol. 58 Issue 12, p5258-5268, 11p, 2 Color Photographs, 2 Black and White Photographs, 2 Graphs
- Publication Year :
- 2023
-
Abstract
- Ultraviolet irradiation confers titanium dioxide amphiphilicity. Unlike the UV-induced hydrophilic properties that had a long history of academic interest, oleophilicity has not received much attention. This study aims to investigate the molecular evidence of lipid adsorption onto UV-treated TiO<subscript>2</subscript> surface by in vitro and in silico approaches. Artificial lipid vesicles were fabricated for empirical confirmation of the increased oleophilicity of the TiO<subscript>2</subscript> surface after UV irradiation and in silico model was developed for computational simulation of the underlying molecular dynamics. After UV treatment and application of a synthetic liposome solution, the TiO<subscript>2</subscript> surfaces were analyzed for surface roughness and the trace of lipid molecules by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and fluorescence confocal microscopy. The surface roughness was reduced and the increased liposome residues on the surface of TiO<subscript>2</subscript> were observed after UV irradiation. The in silico simulation of molecular dynamics predicted higher non-covalent bonding energy to phospholipids and a closer atomic distance between the lipid molecules and the TiO<subscript>2</subscript> surface after UV irradiation. These data suggested that UV irradiation enhanced the oleophilicity of the TiO<subscript>2</subscript>, presumably by the result of the hydrogen bonds between lipid and TiO<subscript>2</subscript>. Further studies on the oleophilicity of TiO<subscript>2</subscript> are required to elucidate the osseointegration process of UV-treated implant fixtures in hyperlipidemic patients. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 58
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 162683250
- Full Text :
- https://doi.org/10.1007/s10853-023-08353-2