One-dimensional titania nanotubes annealed at various temperatures for the photocatalytic degradation of low concentration gaseous pollutants

Investigating photocatalytic property of TiO2 nanorods fabricated hydrothermally at equal molar ratio of KOH and NaOH

“…The main peak of the three samples indicating stretching vibration of Ti‐O‐Ti in the anatase phase appeared in the wavenumbers between 500 and 800 cm −1 . For the precursor, this peak appeared at 698 cm −1 confirms that the starting material is rich in the anatase phase.…”

“…Among the above‐mentioned TiO 2 polymorphs, the anatase phase despite its higher energy gap exhibits the strongest photocatalytic property and this may be due to its high electrical conductivity and electron mobility relative to the other phases . The anatase phase is formed through calcining amorphous phase at a temperature of more than 400°C; it also converts into the rutile phase at temperatures above 600°C; however, the anatase phase prepared at the calcination temperature of 650°C remains as a stable phase . Studies show that the existence of few amount of rutile in the anatase phase may enhance the photocatalytic property …”