Investigation of anodic TiO2 nanotube composition with high spatial resolution AES and ToF SIMS

Dronov, Alexey; Gavrilin, Ilya; Kirilenko, E. P.; Dronova, Daria; Гаврилов, С. А.

doi:10.1016/j.apsusc.2017.10.132

Cited by 35 publications

(14 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…EDX analysis determined 17.8 at % of C and 9.5 at % of F. EDX mapping identified that F is mainly situated on the outer wall of the nanotube while carbon is predominantly localized within the nanotube. These observations are in good agreement with the literature [47,48]. Fig.…”

Section: Morphology Structure and Composition Of Tnt Layerssupporting

confidence: 93%

“…The origin of DW can be explained considering the plastic flow model for the nanotube formation [45,46]. Recent papers studied the exact composition of the inner and outer shell [47,48]. The results show a high C and F contamination of the inner shell, originating from the voltage induced decomposition of the electrolyte while the outer shell consists of almost pure TiO2.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ti3+ doped anodic single-wall TiO2 nanotubes as highly efficient photocatalyst

Motola

Čaplovičová

Krbal

et al. 2020

Electrochimica Acta

View full text Add to dashboard Cite

Section: Morphology Structure and Composition Of Tnt Layerssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Ti3+ doped anodic single-wall TiO2 nanotubes as highly efficient photocatalyst

Motola

Čaplovičová

Krbal

et al. 2020

Electrochimica Acta

View full text Add to dashboard Cite

“…In addition, an ultrathin fluoride-rich layer is also present at the outer walls, i.e., between individual tube walls, caused by the plastic-flow mechanism which pushes the nanotubes upward from the bottom of nanotubes/Ti interface during the tubes formation, hence promotes the F − along the tube walls (Berger et al, 2011). The fluoride-rich, double-walled morphology is well-documented with the support by EDX, XPS, High Resolution Transmission Electron Microscope (HR-TEM), High Angle Annular Dark Field Scanning TEM (HAADF-STEM) Auger Electron Spectroscopy (AES) and Time-of-Flight Secondary-ion Mass Spectrometry (ToF SIMS) depth-profiling measurements (Albu et al, 2008; Berger et al, 2011; So et al, 2017; Dronov et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

TiO2 ALD Coating of Amorphous TiO2 Nanotube Layers: Inhibition of the Structural and Morphological Changes Due to Water Annealing

Sopha

Zazpe

et al. 2019

Front. Chem.

View full text Add to dashboard Cite

The present work presents a strategy to stabilize amorphous anodic self-organized TiO2 nanotube layers against morphological changes and crystallization upon extensive water soaking. The growth of needle-like nanoparticles was observed on the outer and inner walls of amorphous nanotube layers after extensive water soakings, in line with the literature on water annealing. In contrary, when TiO2 nanotube layers uniformly coated by thin TiO2 using atomic layer deposition (ALD) were soaked in water, the growth rates of needle-like nanoparticles were substantially reduced. We investigated the soaking effects of ALD TiO2 coatings with different thicknesses and deposition temperatures. Sufficiently thick TiO2 coatings (≈8.4 nm) deposited at different ALD process temperatures efficiently hamper the reactions between water and F− ions, maintain the amorphous state, and preserve the original tubular morphology. This work demonstrates the possibility of having robust amorphous 1D TiO2 nanotube layers that are very stable in water. This is very practical for diverse biomedical applications that are accompanied by extensive contact with an aqueous environment.

show abstract

“…Most likely, the decrease in etching rate (decreasing of the n eff ) after 7.5 min in H 2 O 2 is caused by layered structure of ATO pore walls. The inner layer, contacting with electrolyte during anodizing, contains more impurities from electrolyte, that makes it less stable than the deeper layer consisting mainly of titania [19]. Obtained quantitative data on thickness and the n eff of ATO will be in demand for the design of materials for antireflection coatings, memristive elements [20], photonic crystals [21], and solar cells.…”

Section: Resultsmentioning

confidence: 99%

Effect of anodizing voltage and pore widening time on the effective refractive index of anodic titanium oxide

Sapoletova¹,

Kushnir²,

Napolskii³

2019

Nanosystems: Phys. Chem. Math.

View full text Add to dashboard Cite

The unique optical properties of porous anodic titanium oxide (ATO) make it a promising material for solar energy conversion, sensorics, and opto-electronics. The optical path length and effective refractive index (n eff ) of ATO can be tuned by chemical etching of pore walls. However, precise control of these optical parameters is still challenging due to the lack of data on the effect of pore widening time on the n eff .Here, a detailed study of the influence of anodizing voltage and pore widening time on the n eff of the ATO films was performed. Analysis of reflectance spectra of ATO synthesized at 35 -50 V shows that pore widening in 3 wt. % H 2 O 2 aqueous solution allows one to control the n eff at values ranging from 1.54 to 1.84. The data required for the prediction of the thickness, n eff , and optical path length of the ATO films from anodizing and etching conditions are obtained.

show abstract

Investigation of anodic TiO2 nanotube composition with high spatial resolution AES and ToF SIMS

Cited by 35 publications

References 38 publications

Ti3+ doped anodic single-wall TiO2 nanotubes as highly efficient photocatalyst

Ti3+ doped anodic single-wall TiO2 nanotubes as highly efficient photocatalyst

TiO2 ALD Coating of Amorphous TiO2 Nanotube Layers: Inhibition of the Structural and Morphological Changes Due to Water Annealing

Effect of anodizing voltage and pore widening time on the effective refractive index of anodic titanium oxide

Contact Info

Product

Resources

About