研究目的
Investigating the influence of thermal treatment procedures in vacuum and air atmosphere on the structural features of multiwalled TiO2 anodic nanotubes formed in fluorine-containing ethylene glycol based electrolyte.
研究成果
Thermal treatment in vacuum leads to a different phase composition of TiO2 nanotubes' inner layer compared to annealing in air. Sequential thermal treatment (first in vacuum and then in air) enables the removal of carbon from the surface and partly from the inner layer of TiO2 nanotubes while preventing detachment of the inner layer from the outer layer. These findings are useful for optimizing the functional properties of TiO2 nanotube-based nanostructures.
研究不足
The study focuses on the structural and compositional changes of TiO2 nanotubes under specific thermal treatment conditions. The findings may not be directly applicable to other types of nanostructures or under different treatment conditions.
1：Experimental Design and Method Selection:
The study involved the preparation of TiO2 nanotubes by Ti foil anodization in a potentiostatic mode, followed by thermal treatments in different atmospheres (air, vacuum, and combined). High-resolution transmission electron microscopy (HRTEM), EDX, electron nanodiffraction, IR and Raman spectroscopy, XPS, and ToF SIMS were used for characterization.
2：Sample Selection and Data Sources:
Titanium foil was used as the substrate for anodization. The samples were characterized before and after thermal treatments.
3：List of Experimental Equipment and Materials:
Helios NanoLab 650 Dual Beam microscope, Titan Themis 200 microscope, HORIBA LabRAM HR Evolution Raman spectrometer, Bruker IFS 66v/S IR spectrometer, TOF.SIMS-5 instrument, PHI 5000 VersaProbe II XPS.
4：Experimental Procedures and Operational Workflow:
TiO2 nanotubes were formed by anodization, followed by thermal treatment under different conditions. The samples were then characterized using the aforementioned techniques.
5：Data Analysis Methods:
The data were analyzed using Maud, Process Diffraction, CrysTBox programs, and open crystallography database of crystals.
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