Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 4, Pages 1469-1476Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm14216j
Keywords
-
Funding
- Ministry of Education of China [309021]
- National Basic Research Program of China [2009CB939704]
- Innovative Research Team Project of Hubei Province [2010CDA070]
- National Science Foundation [51032005]
Ask authors/readers for more resources
Novel 2D-ordered dome films of nano titania (2D-TiO2) and nano Ag2+ doped titania (2D-Ag-TiO2) were prepared by RF magnetron sputtering method. The existence of oxygen vacancies or Ti3+ ions in the 2D-ordered dome films extends the absorption of TiO2 from UV region to visible region up to 530 nm. Doping of Ag2+ in the 2D-TiO2 film considerably enhance the visible light absorption of the 2D-Ag-TiO2 film. Remarkably, for the photodegradation of cationic crystal violet (CV) and anionic methyl orange (MO), the 2D-ordered dome films exhibit 100% photodegradation selectivity to cationic CV. The 2D-Ag-TiO2 film shows excellent selective photocatalytic durability and photostability without detectable photoreduction of Ag2+ ions after long time illumination. Furthermore, the 2D-ordered dome films exhibit unique ratiometric photoelectrochemical sensing property with 100% selectivity to the cationic CV. Ag2+ doping in the 2D-TiO2 film significantly improves the photocatalytic activity and photoelectrochemical sensitivity as it considerably enhances the charge transfer efficiency from excited dye to titania.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available