Anodic Growth and Characterization of Highly Nitrogen Doped Titanium Dioxide Nanotubes with Ordered Structure on Hot Argon DC Plasma Treated Titanium Substrates

作者：Pishkar Negin; Ghoranneviss Mahmood^*; Ghorannevis Zohreh; Akbari Hossein

来源：Journal of Inorganic and Organometallic Polymers and Materials, 2018, 28(5): 2154-2159.

DOI：10.1007/s10904-018-0883-y

• TiO2 nanotubes
• Anodization
• Electrolyte solution
• Plasma pre-treatment
• Nitrogen doped

Nitrogen-doped titanium dioxide (N-TiO2) nanotubes were grown via electrochemical anodization on hot argon DC plasma pre-treated titanium substrates. The anodization process was performed in ethylene glycol based electrolyte solution containing NH4F and deionized water at constant potential at room temperature. N-TiO2 nanotubes were synthesized during their electrochemical formation. It was observed that plasma pre-treatment decreased the surface roughness of titanium substrates. The anodic N-TiO2 nanotubes grown on plasma treated titanium substrates were longer with more ordered periodic structure with hexagonal cross-sectional morphology comparing to the anodic N-TiO2 nanotubes grown on non-plasma treated (reference) titanium substrate. EDX analysis revealed that the N-TiO2 nanotubes were grown during the anodization process with in situ chemical doping. Optical measurements revealed that the anodic N-TiO2 nanotubes grown on plasma treated titanium substrates had slightly lower band gap energy (2.35 eV) compared to the N-TiO2 nanotubes grown on non-plasma treated titanium substrate (2.4 eV).

• 出版日期2018-9