Origin of visible-light activity of N-doped TiO2 photocatalyst: Behaviors of N and S atoms in a wet N-doping process

2012 ◽  
Vol 128 ◽  
pp. 77-83 ◽  
Author(s):  
Taizo Sano ◽  
Nobuaki Mera ◽  
Yusuke Kanai ◽  
Chifumi Nishimoto ◽  
Sakiko Tsutsui ◽  
...  
Keyword(s):  
Visible Light ◽  
Tio2 Photocatalyst ◽  
Doped Tio2 ◽  
Light Activity ◽  
N Doping

Synergistic effect of polychromatic radiation on visible light activity of N-doped TiO2 photocatalyst

2020 ◽  
Vol 134 ◽  
pp. 105841 ◽  
Author(s):  
Nikita Kovalevskiy ◽  
Dmitry Selishchev ◽  
Dmitry Svintsitskiy ◽  
Svetlana Selishcheva ◽  
Alexey Berezin ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Visible Light ◽  
Tio2 Photocatalyst ◽  
Doped Tio2 ◽  
Light Activity ◽  
Polychromatic Radiation

Low temperature hydrothermal synthesis of N-doped TiO2 photocatalyst with high visible-light activity

2010 ◽  
Vol 502 (2) ◽  
pp. 289-294 ◽  
Author(s):  
Deyong Wu ◽  
Mingce Long ◽  
Weimin Cai ◽  
Chao Chen ◽  
Yahui Wu
Keyword(s):  
Hydrothermal Synthesis ◽  
Low Temperature ◽  
Visible Light ◽  
Tio2 Photocatalyst ◽  
Doped Tio2 ◽  
Light Activity

Carbon-doped TiO2 photocatalyst synthesized without using an external carbon precursor and the visible light activity

2009 ◽  
Vol 91 (1-2) ◽  
pp. 355-361 ◽  
Author(s):  
Yiseul Park ◽  
Wooyul Kim ◽  
Hyunwoong Park ◽  
Takashi Tachikawa ◽  
Tetsuro Majima ◽  
...  
Keyword(s):  
Visible Light ◽  
Carbon Precursor ◽  
Tio2 Photocatalyst ◽  
Doped Tio2 ◽  
Carbon Doped ◽  
Light Activity

Visible-Light Activity of N-Doped TiO2 Powders and their Applications

2007 ◽  
Vol 544-545 ◽  
pp. 167-170 ◽  
Author(s):  
Wen Bin Cao ◽  
Yi Wei ◽  
Yan Hong Li ◽  
Xiao Ning Zhang
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Guanidine Hydrochloride ◽  
Anatase Tio2 ◽  
Light Irradiation ◽  
Latex Paint ◽  
Doped Tio2 ◽  
Light Activity ◽  
Xrd Patterns

Nitrogen-doped TiO2 has been prepared by calcining technical grade guanidine hydrochloride and commercial anatase TiO2 powders. XRD patterns indicate that the prepared powders are composed of anatase. XPS results show that N atoms have been incorporated into the lattice of anatase. UV-Vis reflectance spectra show that the light absorption of the synthesized N-doped anatase powders has red-shifted well into visible-light region. Degradation of methylene blue (MB) aqueous solution by N-doped anatase has been investigated by UV-Vis light spectrophotometer. The 400-mL 10 mg/L aqueous solution of MB could be degraded with 4 g N-doped TiO2 within 4.5 hrs of visible light irradiation. Photocatalytic paint was prepared by adding the synthesized N-doped nanocrystalline anatase TiO2 powders into self-engineered oxidation resistance latex paint system. The effects of the amount and types of the TiO2 in the paints on the sterilization were systematically investigated. The colony counting method was used to study its sterilization performance under visible light irradiation. The sterilization experiments show that the rate of sterilizing E. coli by the N-doped TiO2 modified paint can exceed more than 99% after irradiation by the visible light for 2 to 4 hours.

Visible-light-activated Ce–Si co-doped TiO2 photocatalyst

2009 ◽  
Vol 255 (18) ◽  
pp. 7918-7924 ◽  
Author(s):  
Qifeng Chen ◽  
Dong Jiang ◽  
Weimei Shi ◽  
Dong Wu ◽  
Yao Xu
Keyword(s):  
Visible Light ◽  
Tio2 Photocatalyst ◽  
Doped Tio2 ◽  
Co Doped

Preparation of highly visible-light active N-doped TiO2 photocatalyst

2010 ◽  
Vol 20 (25) ◽  
pp. 5301 ◽  
Author(s):  
Guidong Yang ◽  
Zheng Jiang ◽  
Huahong Shi ◽  
Tiancun Xiao ◽  
Zifeng Yan
Keyword(s):  
Visible Light ◽  
Tio2 Photocatalyst ◽  
Doped Tio2 ◽  
Visible Light Active

scholarly journals Photocatalysis over N-Doped TiO2 Driven by Visible Light for Pb(II) Removal from Aqueous Media

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 945
Author(s):  
Endang Tri Wahyuni ◽  
Titi Rahmaniati ◽  
Aulia Rizky Hafidzah ◽  
Suherman Suherman ◽  
Adhitasari Suratman
Keyword(s):  
Visible Light ◽  
Photocatalytic Oxidation ◽  
Irradiation Time ◽  
Aqueous Media ◽  
Visible Region ◽  
Significant Activity ◽  
Solution Ph ◽  
Doped Tio2 ◽  
Photo Oxidation ◽  
N Doping

The photocatalysis process over N-doped TiO2 under visible light is examined for Pb(II) removal. The doping TiO2 with N element was conducted by simple hydrothermal technique and using urea as the N source. The doped photocatalysts were characterized by DRUVS, XRD, FTIR and SEM-EDX instruments. Photocatalysis of Pb(II) through a batch experiment was performed for evaluation of the doped TiO2 activity under visible light, with applying various fractions of N-doped, photocatalyst mass, irradiation time, and solution pH. The research results attributed that N doping has been successfully performed, which shifted TiO2 absorption into visible region, allowing it to be active under visible irradiation. The photocatalytic removal of Pb(II) proceeded through photo-oxidation to form PbO2. Doping N into TiO2 noticeably enhanced the photo-catalytic oxidation of Pb(II) under visible light irradiation. The highest photocatalytic oxidation of 15 mg/L Pb(II) in 25 mL of the solution could be reached by employing TiO2 doped with 10%w of N content 15 mg, 30 min of time and at pH 8. The doped-photocatalyst that was three times repeatedly used demonstrated significant activity. The most effective process of Pb(II) photo-oxidation under beneficial condition, producing less toxic and handleable PbO2 and good repeatable photocatalyst, suggest a feasible method for Pb(II) remediation on an industrial scale.

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