Cobalt ion-doped TiO{sub 2} photocatalyst response to visible light
Photocatalytic activity under visible light irradiation was generated by doping a small amount of Co{sup 2+} ions into TiO{sub 2} particles. Nanometer-sized particles with the composition xCoO--(100 - x)TiO{sub 2} (xCo/TiO{sub 2}; 0 {le} x {le} 6.0) were prepared from TiOSO{sub 4}{center_dot}4.5H{sub 2}O and Co(CH{sub 3}COO){sub 2}{center_dot}4H{sub 2}O in an ethanol-water solution containing NaOH under reflux. The photoreactivity of xCo/TiO{sub 2} was evaluated by the rate of CH{sub 3}CHO degradation. The Co{sup 2+} ion doping (0.01 {le} x {le} 0.27)not only enhanced the photocatalytic activity under ultraviolet-visible ({lambda} > 300 nm) light irradiation but also induced the visible light ({lambda} > 400 nm) response. The highest photocatalytic activities were obtained at x = 0.03 for both irradiations.
- Research Organization:
- Kinki Univ., Higashi, Osaka (JP)
- OSTI ID:
- 20050905
- Journal Information:
- Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 1 Vol. 224; ISSN 0021-9797; ISSN JCISA5
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hierarchical chlorine-doped rutile TiO{sub 2} spherical clusters of nanorods: Large-scale synthesis and high photocatalytic activity
Effect of nitrogen-doping temperature on the structure and photocatalytic activity of the B,N-doped TiO{sub 2}