Synthesis of nitrogen doped faceted titanium dioxide in pure brookite phase with enhanced visible light photoactivity

2016 ◽  
Vol 469 ◽  
pp. 25-30 ◽  
Author(s):  
Jian Pan ◽  
San Ping Jiang
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Nitrogen Doped ◽  
Brookite Phase

Efficient visible-light induced photocatalysis on nanoporous nitrogen-doped titanium dioxide catalysts

2013 ◽  
Vol 228 ◽  
pp. 756-764 ◽  
Author(s):  
Hyun Uk Lee ◽  
Soon Chang Lee ◽  
Saehae Choi ◽  
Byoungchul Son ◽  
Sang Moon Lee ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Nitrogen Doped ◽  
Doped Titanium Dioxide ◽  
Nitrogen Doped Titanium Dioxide

Photo-Catalytic Activity of Carbon/Nitrogen Doped TiO2-SiO2 under UV and Visible Light Irradiation

2012 ◽  
Vol 734 ◽  
pp. 226-236 ◽  
Author(s):  
Henry H. Mungondori ◽  
Lilian Tichagwa
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Silicon Dioxide ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Phenol Red ◽  
Carbon And Nitrogen ◽  
Photo Catalyst ◽  
Nitrogen Doped ◽  
Glass Support

The sol gel synthesis method was used to prepare carbon and nitrogen doped titanium dioxide (TiO2) photo-catalyst using titanium tetrachloride (TiCl4) as the precursor. Doping was carried out to modify the absorption band edge of titanium dioxide. To avert the problem associated with use of powder TiO2, the photo-catalyst was immobilized on glass support using tetraethyl orthosilicate (TEOS), which served as a binder and precursor for silicon dioxide (SiO2). The prepared photo-catalytic materials were characterized by FT-IR, XRD, TEM, BET and DRS. The photo-catalytic efficiency of titanium dioxide immobilized on glass support was evaluated using the degradation of methyl orange (MeO) and phenol red (PRed) under ultraviolet and visible light irradiation. Doping with carbon and nitrogen, and incorporation of silicon dioxide into the titanium dioxide matrix allowed utilization of visible light by the prepared TiO2-SiO2nanocomposites. Photo-degradation tests were carried out for doped and undoped photo-catalyst. An increased rate of photo-oxidation of methyl orange and phenol red was observed under visible light irradiation as compared to UV light irradiation.

scholarly journals Hydrothermal Synthesis of Nitrogen-Doped Titanium Dioxide and Evaluation of Its Visible Light Photocatalytic Activity

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Junjie Qian ◽  
Guanjun Cui ◽  
Mingjun Jing ◽  
Yan Wang ◽  
Min Zhang ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Photoelectron Spectroscopy ◽  
Infrared Spectrometry ◽  
Molecular Formula ◽  
X Ray ◽  
Nitrogen Doped ◽  
Enhanced Absorption ◽  
Doped Titanium Dioxide ◽  
Nitrogen Doped Titanium Dioxide

Nitrogen-doped titanium dioxide (N-dopedTiO2) photocatalyst was synthesized from nanotube titanic acid (denoted as NTA; molecular formulaH2Ti2O5·H2O) precursorviaa hydrothermal route in ammonia solution. As-synthesized N-dopedTiO2catalysts were characterized by means of X-ray diffraction, transmission electron microscopy, diffuse reflectance spectrometry, X-ray photoelectron spectroscopy, electron spin resonance spectrometry and Fourier transform infrared spectrometry. It was found that nanotube ammonium titanate (NAT) was produced as an intermediate during the preparation of N-dopedTiO2from NTA, as evidenced by the N1sX-ray photoelectron spectroscopic peak ofNH4 +at 401.7 eV. The catalyst showed much higher activities to the degradation of methylene blue and p-chlorophenol under visible light irradiation than Degussa P25. This could be attributed to the enhanced absorption of N-dopedTiO2in visible light region associated with the formation of single-electron-trapped oxygen vacancies and the inhibition of recombination of photo-generated electron-hole pair by doped nitrogen.

Nitrogen-doped titanium dioxide (N-doped TiO2) for visible light photocatalysis

2016 ◽  
Vol 40 (4) ◽  
pp. 3000-3009 ◽  
Author(s):  
Sajid Ali Ansari ◽  
Mohammad Mansoob Khan ◽  
Mohd Omaish Ansari ◽  
Moo Hwan Cho
Keyword(s):  
Titanium Dioxide ◽  
Energy Level ◽  
Visible Light ◽  
Visible Light Photocatalysis ◽  
Doped Tio2 ◽  
Nitrogen Doped ◽  
Photocatalytic Application ◽  
Doped Titanium Dioxide ◽  
Nitrogen Doped Titanium Dioxide

Energy level diagrams for undoped and N-doped TiO2 for visible light induced photocatalytic application.

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