Phosphorus-doped titania nanotubes with enhanced photocatalytic activity

Environmental pollution has become one of the most serious problems with the development of the world. TiO2 has caused great concern due to its excellent effort on the environmental puriﬁcation and solar energy conversion. N, S-doped titania were prepared by a one-pot hydrothermalmethod using urea and sulfourea as precursor of nitrogen and sulfur. The samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of them was evaluated for the degradation of methylene blue under xenon lamp which has similar spectra to solar light. The preparation methods and doping mechanism of the nitrogen-doped TiO2 are discussed. Morever, N, S-codoped titania can further enhacnce the photocatalytic activity effectively, This excellent performance could endow the as-prepared P-doped titania potential in purifying wastewater.

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Visible-Light Photodegradation of Dye on Co-Doped Titania Nanotubes Prepared by Hydrothermal Synthesis

International Journal of Photoenergy ◽

10.1155/2012/206534 ◽

2012 ◽

Vol 2012 ◽

pp. 1-10 ◽

Cited By ~ 5

Author(s):

Jung-Pin Wang ◽

Hsi-Chi Yang ◽

Chien-Te Hsieh

Keyword(s):

Photocatalytic Activity ◽

Liquid Phase ◽

Visible Light ◽

Band Gap ◽

Optical Band Gap ◽

Titania Nanotubes ◽

High Porosity ◽

Fluorescent Lamp ◽

Doped Titania ◽

Co Doped

Highly porous Co-doped TiO2nanotubes synthesized from a hydrothermal treatment were used to photodecompose methylene blue (MB) in liquid phase under visible light irradiation. The anatase-type titania nanotubes were found to have high specific surface areas of about 289–379 m2/g. These tubes were shown to be hollow scrolls with outer diameter of about 10–15 nm and length of several micrometers. UV absorption confirmed that Co doping makes the light absorption of nanotubes shift to visible light region. With increasing the dopant concentration, the optical band gap of nanotubes became narrower, ranging from 2.4 eV to 1.8 eV, determined by Kubelka-Munk plot. The Co-doped nanotubes exhibit not only liquid-phase adsorption ability, but also visible-light-derived photodegradation of MB in aqueous solution. The synergetic effect involves two key factors in affecting the photocatalytic activity of Co-doped titania nanotubes under fluorescent lamp, that is, high porosity and optical band gap. The merit of the present work is to provide an efficient route for preparing Co-doped TiO2nanotubes and to clarifying their adsorption and photocatalytic activity under fluorescent lamp.

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Influence of Defects on Photoconductivity and Photocatalytic Activity of Nitrogen-Doped Titania

Applied Magnetic Resonance ◽

10.1007/s00723-017-0870-4 ◽

2017 ◽

Vol 48 (4) ◽

pp. 335-345 ◽

Cited By ~ 5

Author(s):

A. A. Minnekhanov ◽

N. T. Le ◽

E. A. Konstantinova ◽

P. K. Kashkarov

Keyword(s):

Photocatalytic Activity ◽

Nitrogen Doped ◽

Doped Titania

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A copper anchored on phosphorus g-C3N4 as a highly efficient photocatalyst for synthesis of N-arylpyridin-2-amines

Green Chemistry ◽

10.1039/d0gc03400b ◽

2021 ◽

Author(s):

Jia-Qi Di ◽

Mo Zhang ◽

Yu-Xuan Chen ◽

Jin-Xin Wang ◽

Shan-Shan Geng ◽

...

Keyword(s):

Photocatalytic Activity ◽

High Photocatalytic Activity ◽

Recyclable Catalyst ◽

Highly Efficient ◽

Phosphorus Doped

A heterogeneous photocatalyst based on copper modified phosphorus doped g-C3N4 (Cu/P-CN) has been prepared and characterized. This recyclable catalyst exhibited high photocatalytic activity for the synthesis of N-arylpyridin-2-amine derivatives by...

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On the photocatalytic activity of the sulfur doped titania nano-porous films derived via micro-arc oxidation

Applied Catalysis A General ◽

10.1016/j.apcata.2010.09.003 ◽

2010 ◽

Vol 389 (1-2) ◽

pp. 60-67 ◽

Cited By ~ 56

Author(s):

M.R. Bayati ◽

A.Z. Moshfegh ◽

F. Golestani-Fard

Keyword(s):

Photocatalytic Activity ◽

Porous Films ◽

Micro Arc Oxidation ◽

Doped Titania

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Study on Synthesis and Photocatalytic Activity of Porous Titania Nanotubes

Advances in Materials Science and Engineering ◽

10.1155/2016/3532817 ◽

2016 ◽

Vol 2016 ◽

pp. 1-10 ◽

Cited By ~ 2

Author(s):

Huang Liu ◽

Yanhua Zhang ◽

Hongtao Yang ◽

Wei Xiao ◽

Lanlan Sun

Keyword(s):

Electron Microscopy ◽

Photocatalytic Activity ◽

Filter Paper ◽

Photoelectron Spectroscopy ◽

Diffuse Reflectance Spectroscopy ◽

Cellulose Nanofibers ◽

Titania Nanotubes ◽

Tetrabutyl Titanate ◽

X Ray ◽

Porous Titania

Using the common natural cellulose substance (filter paper) and triblock copolymer (Pluronic P123) micelles as dual templates, porous titania nanotubes with enhanced photocatalytic activity have been successfully synthesized through sol-gel methods. Firstly, P123 micelles were adsorbed onto the surfaces of cellulose nanofibers of filter paper, followed by hydrolysis and condensation of tetrabutyl titanate around these micelles to form titania layer. After calcination to remove the organic templates, hierarchical titania nanotubes with pores in the walls were obtained. The sample was characterized by X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption/desorption, Fourier Transform Infrared Spectroscopy (FT-IR), Ultraviolet-Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS), and X-ray photoelectron spectroscopy (XPS). As compared with commercial P25 catalyst, the porous titania nanotubes prepared by this method displayed significantly enhanced photocatalytic activity for degrading methyl orange under UV irradiation. Within 10 minutes, the porous titania nanotubes are able to degrade over 70% of the original MO, while the value for the commercial Degussa P25 is only about 33%.

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