One-step synthesis of Zn doped titania nanotubes and investigation of their visible photocatalytic activity

2015 ◽  
Vol 160 ◽  
pp. 279-288 ◽  
Author(s):  
Poonam Benjwal ◽  
Kamal K. Kar
Keyword(s):  
Photocatalytic Activity ◽  
Titania Nanotubes ◽  
One Step ◽  
Doped Titania ◽  
Visible Photocatalytic Activity

scholarly journals Solvothermal-induced phase transition and visible photocatalytic activity of nitrogen-doped titania

2009 ◽  
Vol 163 (1) ◽  
pp. 273-278 ◽  
Author(s):  
Jianjun Liu ◽  
Wei Qin ◽  
Shengli Zuo ◽  
Yingchun Yu ◽  
Zhengping Hao
Keyword(s):  
Phase Transition ◽  
Photocatalytic Activity ◽  
Nitrogen Doped ◽  
Doped Titania ◽  
Visible Photocatalytic Activity

Phosphorus-doped titania nanotubes with enhanced photocatalytic activity

2011 ◽  
Vol 225 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Ramesh Asapu ◽  
V. Manohar Palla ◽  
Bin Wang ◽  
Zhanhu Guo ◽  
Rakesh Sadu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Titania Nanotubes ◽  
Doped Titania ◽  
Phosphorus Doped

Hydrothermal Treatment and its Influence on the Structure of Phosphorous Doped Titania

2011 ◽  
Vol 287-290 ◽  
pp. 1775-1778
Author(s):  
Si Yao Guo ◽  
Feng Fei Wang ◽  
Li Jiang ◽  
Dong Po He
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Hydrothermal Treatment ◽  
Photoelectron Spectroscopy ◽  
Lattice Structure ◽  
Sol Gel ◽  
Xenon Lamp ◽  
X Ray ◽  
One Step ◽  
Doped Titania

P-doped titania was synthesized by a one step hydrothermal method and sol-gel method, which is characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The samples prepared by hydrothermal method demonstrate higher photocatalytic activity toward the degradation of methylene blue under xenon lamp which has similar spectra to solar light, and also is much superior to that of the commercial P25. The as prepared P-doped titania shows a small particle size (the minimum reaches to 4.5 nm). In addition, the samples prepared by hydrothermal treatment could severely influence the crystal lattice structure. Morever, P-doped titania can further enhacnce the photocatalytic activity effectively, and hydrothermal treatment is a very suitable method for the synthesis of P-doped titania. This excellent performance could endow the as-prepared P-doped titania potential in purifying wastewater.

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

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
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.

Marked Enhancement of Photocatalytic Activity of P-Doped TiO2 with Hydrothermal Method

2010 ◽  
Vol 113-116 ◽  
pp. 2150-2153 ◽  
Author(s):  
Si Yao Guo ◽  
Feng Lu Wang ◽  
Jin Bing Sun ◽  
Lin Yang ◽  
Feng Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Photoelectron Spectroscopy ◽  
Physical Adsorption ◽  
Anatase Phase ◽  
Titania Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
One Step ◽  
Doped Titania

Phosphor-doped titania nanoparticles were synthesized by a one step hydrothermal method. These samples which prepared by hydrothermal method exist in anatase phase has much higher photocatalytic activity for methylene blue (MB) degradation. In addition, MB degradation performance of the hydrothermal ones is also superior to that of the commercial P25. The resulting materials were characterized by X-ray diffraction (XRD), nitrogen physical adsorption at 77 K, X-ray photoelectron spectroscopy (XPS), etc. It can conclude the hydrothermal method proves to be more suitable to improve the photocatalytic performance.

Hydrothermal Treatment and its Influence on the Structure of Nitrogen Doped Titania

2011 ◽  
Vol 393-395 ◽  
pp. 1255-1258
Author(s):  
Zhan Shu ◽  
Tao Zeng ◽  
Hou Juan Liu
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Hydrothermal Treatment ◽  
Photoelectron Spectroscopy ◽  
Lattice Structure ◽  
Xenon Lamp ◽  
X Ray Diffraction ◽  
X Ray ◽  
One Step ◽  
Doped Titania

N-doped titania was synthesized by a one step hydrothermal method, which is characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The samples prepared by hydrothermal method demonstrate higher photocatalytic activity toward the degradation of methylene blue under xenon lamp which has similar spectra to solar light, and also is much superior to that of the commercial P25. In addition, the samples prepared by hydrothermal treatment could severely influence the crystal lattice structure. Morever, N-doped titania can further enhacnce the photocatalytic activity effectively, and hydrothermal treatment is a very suitable method for the synthesis of N-doped titania. This excellent performance could endow the as-prepared P-doped titania potential in purifying wastewater.

Photochemical synthesis of ZnO/Ag2O heterostructures with enhanced ultraviolet and visible photocatalytic activity

2014 ◽  
Vol 2 (20) ◽  
pp. 7272-7280 ◽  
Author(s):  
Shuaishuai Ma ◽  
Jinjuan Xue ◽  
Yuming Zhou ◽  
Zewu Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Photochemical Synthesis ◽  
One Step ◽  
Photochemical Route ◽  
Visible Photocatalytic Activity

ZnO/Ag2O heterostructures were successfully synthesized via a simple one-step photochemical route.

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