Changing bioperformance of TiO2 amorphous nanotubes as an effect of inducing crystallinity

Bioelectrochemistry
A MazareE Vasile

Abstract

Controlled-diameter TiO(2) nanotubes were obtained by electrochemical anodizing of two different substrates (Ti and Ti6Al7Nb) in an aqueous electrolyte. As-formed TiO(2) nanotubes are amorphous and by subjecting to thermal treatments, the structure becomes crystalline. An optimal thermal treatment with a specific anatase/rutile ratio was chosen, determined from X-ray diffraction (XRD). The electrochemical behaviour of annealed and as-formed samples was followed with Tafel plots and Electrochemical impedance spectroscopy (EIS), while surface analysis involved scanning electron microscopy (SEM) and contact angle measurements (CA). Annealed samples have a more hydrophilic character than as-formed as well as a better stability in bioliquids. Such behaviour of annealed samples is connected with a better biocompatibility expressed in terms of cell morphology and gene expression of bone specific markers obtained from Reverse Transcription Polymerase Chain Reaction (RT-PCR).

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Citations

May 3, 2014·PloS One·Azhang HamlekhanTolou Shokuhfar
Mar 4, 2014·Materials Science & Engineering. C, Materials for Biological Applications·Ioan RomanAnca Dinischiotu
Mar 26, 2014·Bioelectrochemistry·Sabina GrigorescuIoana Demetrescu
Aug 15, 2014·Chemical Reviews·Kiyoung LeePatrik Schmuki
Sep 16, 2014·The International Journal of Biochemistry & Cell Biology·Patricia NeacsuIoana Demetrescu
Aug 3, 2017·Nanotechnology·Sachin M Bhosle, Craig R Friedrich
Feb 20, 2020·Nanomaterials·Yuliya Y KhrunykMarcin Wysokowski
May 23, 2020·Journal of Biomedical Materials Research. Part a·Robinson Aguirre OcampoFélix Echeverría Echeverría
Jun 11, 2020·Nanomaterials·Metka BenčinaIta Junkar
Jun 4, 2020·Materials·Stefano RossiMarielle Eyraud
Apr 7, 2018·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Yan ChengYuekun Lai
Jan 23, 2015·Nanotechnology·M KulkarniM Mozetič
Jun 18, 2020·International Journal of Nanomedicine·Jinghong YangYan Wang
Feb 23, 2019·Materials·Metka BenčinaMiran Mozetič
May 5, 2021·Drug Delivery and Translational Research·Kun WangPeng Li

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