Effective photocatalytic properties of N doped Titanium dioxide nanotube arrays prepared by anodization

2012 ◽  
Vol 106 (2) ◽  
pp. 341-353 ◽  
Author(s):  
Haiying Wang ◽  
Yucheng Yang ◽  
Jianhong Wei ◽  
Ling Le ◽  
Yang Liu ◽  
...  
2014 ◽  
Vol 24 (43) ◽  
pp. 6782-6782
Author(s):  
Hoda Amani Hamedani ◽  
Nageh K. Allam ◽  
Mostafa A. El-Sayed ◽  
Mohammad A. Khaleel ◽  
Hamid Garmestani ◽  
...  

2013 ◽  
Vol 641-642 ◽  
pp. 11-17 ◽  
Author(s):  
Zhi Peng Meng ◽  
Fu Xin Zhong ◽  
Dan Yu Wang ◽  
Zhong Ming Zhang ◽  
Hua Ying Li ◽  
...  

This paper presents a novel approach for preparing titanium dioxide nanotube arrays (TNTs) loaded with highly dispersed Br through an ultrasound aided photochemical route. The content of Br doped on the arrays was controlled by changing the concentration of NaBr and the ultrasound time. The Br doped TiO2nanotube arrays were characterized by SEM, XRD and UV–Vis spectrum. Doping the bromine did not basically affect the morphology of the surface of the TNTs, but part of the anatase phase transformed into rutile phase, which led to the formation of the mixed crystal and increased the photocatalytic activity. The results showed that Br doping significantly enhanced the photocatalytic degradation rate of titanium dioxide nanotube arrays under UV-light irradiation. The main factors which affected photocatalytic degradation of sugar wastewater were the illumination time and pH. The results showed that the longer the exposure time was, the initial pH of wastewater was more favorable to photocatalytic degradation of the sugar wastewater for the Br-TiO2nanotube arrays, and compared to undoped TiO2nanotube arrays Br doped TiO2nanotube arrays had better photocatalytic properties.


2011 ◽  
Vol 130-134 ◽  
pp. 1254-1257
Author(s):  
Zi Bo Wang ◽  
Liu Yan Su ◽  
Yu Jiang Guan ◽  
Shu Li Bai

The in-suit Dy-doped titanium dioxide nanotubes arrays were prepared by anodic oxidation method using Dy (NO3)3·6H2O and pure Ti sheet. The sample was characterized by SEM, XRD and XPS for its size and structure. The photocatalytic properties of nanotubes arrays were researched by using methyl orange as target degradation under the visible light. The results showed that the catalytic activity of Dy-doped titanium dioxide nanotubes arrays was 72% under visible light. The catalyst has hight stability and potential industrial applications.


2014 ◽  
Vol 24 (43) ◽  
pp. 6783-6796 ◽  
Author(s):  
Hoda Amani Hamedani ◽  
Nageh K. Allam ◽  
Mostafa A. El-Sayed ◽  
Mohammad A. Khaleel ◽  
Hamid Garmestani ◽  
...  

2014 ◽  
Vol 2 (29) ◽  
pp. 11454-11464 ◽  
Author(s):  
Dengyu Pan ◽  
He Huang ◽  
Xueyuan Wang ◽  
Liang Wang ◽  
Haobo Liao ◽  
...  

We report the fabrication of long titanium dioxide nanotube arrays with highly c-axis preferentially oriented crystallization and a high concentration of oxygen vacancies by second anodization in ethylene glycol and annealing under poor-oxygen conditions.


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