Turkish Journal of Chemistry
Abstract
A novel approach was developed for the synthesis of high-dispersed anatase nano-TiO_2 by a hydrothermal process without solvent at 200 °C in 1 h. It was characterized using XRD, TEM, BET and elemental analysis. Nanoparticle-TiO_2 was used as a photocatalyst by considering complete degradation of Rhodamine B (RB) dye. The photocatalytic reaction parameters such as photocatalyst amount, irradiation time and dye concentration were optimized and it was found that 0.125 wt% catalyst in 30 mg/L of RB aqueous solution is adequate for full degradation of RB in 50 min with 770 W/m^2 irradiation power. Photocatalytic activity of the nanoparticle-TiO_2 was compared with Degussa P-25 at optimum catalysis conditions determined for the nanoparticle-TiO_2. It was concluded that when compared to Degussa P-25, the nanoparticle-TiO_2 can be repeatedly used with increasing photocatalytic activity. The results revealed that the photodegradation of RB proceeds by pseudo first-order reaction kinetics in which the rate constant of the degradation is 0.132 min^{-1}.
DOI
-
First Page
333
Last Page
343
Recommended Citation
AKARSU, M, ASİLTÜRK, M, SAYILKAN, F, KİRAZ, N, ARPAÇ, E, & SAYILKAN, H (2006). A Novel Approach to the Hydrothermal Synthesis of Anatase Titania Nanoparticles and the Photocatalytic Degradation of Rhodamine B. Turkish Journal of Chemistry 30 (3): 333-343. https://doi.org/-
