Visible Light Photocatalysis with Nitrogen-Doped Titanium Dioxide Nanoparticles Prepared by Plasma Assisted Chemical Vapor Deposition
Nitrogen-doped TiO{sub 2} nanoparticles were synthesized via plasma assisted metal organic chemical vapor deposition. Nitrogen dopant concentration was varied from 0 to 1.61 at. %. The effect of nitrogen ion doping on visible light photocatalysis has been investigated. Samples were analyzed by various analytical techniques such as x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy, and near-edge x-ray absorption fine structure. Titanium tetraisopropoxide was used as the titanium precursor, while rf-plasma-decomposed ammonia was used as the source for nitrogen doping. The N-doped TiO{sub 2} nanoparticles were deposited on stainless steel mesh under a flow of Ar and O2 gases at 600 {sup o}C in a tube reactor. The photocatalytic activity of the prepared N-doped TiO{sub 2} samples was tested by the degradation of 2-chlorophenol (2-CP) in an aqueous solution using a visible lamp equipped with an UV filter. The efficiency of photocatalytic oxidation of 2-CP was measured using high performance liquid chromatography. Results obtained revealed the formation of N-doped TiO{sub 2} samples as TiO{sub 2-x}N{sub x}, and a corresponding increase in the visible light photocatalytic activity.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 930609
- Report Number(s):
- BNL-80917-2008-JA; JVTBD9; TRN: US200904%%809
- Journal Information:
- Journal of Vacuum Sci. and Tech. B: Microelect. and Nanometer Structure, Vol. 24, Issue 3; ISSN 0734-211X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABSORPTION
AMMONIA
AQUEOUS SOLUTIONS
ARGON
CHEMICAL VAPOR DEPOSITION
DOPED MATERIALS
EFFICIENCY
FINE STRUCTURE
GASES
HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY
NITROGEN
NITROGEN IONS
OXIDATION
OXYGEN
PHOTOCATALYSIS
PLASMA
PRECURSOR
STAINLESS STEELS
TITANIUM
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
national synchrotron light source