The electrochemical behavior of fluorine containing electrolytes and its influence in controlling the lateral dimensions of TiO2 nanotubes is thoroughly investigated. Potentiostatic anodization is carried out in three different electrolytes, viz., aqueous hydrofluoric acid (HF), HF containing dimethyl sulphoxide (DMSO) and HF containing ethylene glycol (EG). The experiments were carried out over a broad voltage range from 2 to 2V in .1- 48 wt% HF concentrations and different electrolytic compositions for anodization times ranging from 5sec - 7hours. The chemistry that dictates how the nature of electrolytes influences the morphology of nanotubes is discussed. Electrochemical impedance spectra were recorded for.
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