TiO2 Nanotubes with Nanograss Structure: The Effect of the Anodizing Voltage on the Formation Mechanism and Structure Properties

Morphology and Optical Properties of Highly Ordered TiO2 Nanotubes Grown in NH4F/o-H3PO4 Electrolytes in View of Light-Harvesting and Catalytic Applications

“…To this purpose, electrochemical anodization, which allows high-surface-area TiO 2 nanotube layers to be produced, is a most straightforward path due to its simplicity, high reproducibility, scalability, and low cost. , Initially, TiO 2 nanotubes a few hundred of nanometers thick with a comparably poor degree of self-ordering were grown by anodization of Ti substrates in acidic aqueous electrolytes . Several types of alternative media, i.e., neutral aqueous solutions , and later organic electrolytes (most commonly HF–glycerol or HF–ethylene glycol mixtures), were then shown to provide NTs with higher degrees of self-ordering and aspect ratios. − …”

“…19,20 Initially, TiO 2 nanotubes a few hundred of nanometers thick with a comparably poor degree of self-ordering were grown by anodization of Ti substrates in acidic aqueous electrolytes. 21 Several types of alternative media, i.e., neutral aqueous solutions 22,23 and later organic electrolytes (most commonly HF−glycerol or HF−ethylene glycol mixtures), 24 were then shown to provide NTs with higher degrees of self-ordering 25 and aspect ratios. 26−28 The geometry of TiO 2 nanotubular arrays has a key role in determining NT optical characteristics such as reflectance/ absorbance of the incident light.…”

Recent Progress in Anodic Oxidation of TiO2 Nanotubes and Enhanced Photocatalytic Performance: A Short Review

“…141 TiO2 nanotubes with nano grating structure can be prepared by oxidation in fluorine-containing electrolyte, which accelerates electron-hole separation and also provided lower recombination rate. 142 The performance of TiO2 nanotubes is greatly improved even through simple surface treatment. 143 The regularity and uniformity of TiO2 nanotubes and their photocatalytic activity increase with the increasing oxidation voltage.…”

The Effects of Anodization Conditions on TiO2 Nanotubes Features Obtained Using Aqueous Electrolytes with Xanthan Gum

“…However, it is vital to consider that, in comparison to aqueous electrolytes, these electrolytes are more costly and less eco-friendly. In addition, in recent years various publications [14][15][16][17][18][19][20][21][22] have reported certain problems related to the coating regularity and packing of TiO 2 nanotubes made in organic solutions, for example, delamination, cracks, different spaces among nanotubes, and coral-like structures.…”