scholarly journals Nonstoichiometric titanium dioxide nanotubes with enhanced catalytical activity under visible light

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
A. A. Valeeva ◽  
E. A. Kozlova ◽  
A. S. Vokhmintsev ◽  
R. V. Kamalov ◽  
I. B. Dorosheva ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Titanium Dioxide Nanotubes ◽  
Nonstoichiometric Titanium

scholarly journals Synthesis and Attestation of Titanium Dioxide Nanotubes Based Photocatalyst for Water and Air Purification out of Harmful Organic Impurities

2020 ◽  
Author(s):  
A. A. Valeeva ◽  
I. B. Dorosheva ◽  
I. A. Weinstein ◽  
A. A. Rempel ◽  
E. A. Kozlova
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Titanium Foil ◽  
Titanium Dioxide Nanotubes ◽  
Titanium Dioxide Films ◽  
Organic Impurities ◽  
Degussa P25 ◽  
Foil Substrate ◽  
Nonstoichiometric Titanium ◽  
Purification Of Water

In the present work we have synthesized nanotubular TiO2 film with a nonstoichiometric layer in the vicinity of titanium foil by anodization during 120 min. The catalytic activity of nanotubular titanium dioxide films formed during the oxidation of acetone to carbon dioxide under the action of visible light with a wavelength of 450 nm was found to be approximately 2 times higher compared to standard titanium dioxide (Degussa P25). Such a pronounced enhancement of activity may be attributed to a more efficient absorption of visible light by the films due to narrowing of the optical gap because of difference in the nonstoichiometry of titanium dioxide near the interface between nanotubular film and the titanium foil substrate. Keywords: photocatalysis, nonstoichiometric titanium dioxide, purification of water

Study on the Preparation of Dy-Doped TiO2 Nanotube Arrays and its Visible Light Responsive Photocatalytic Properties

2011 ◽  
Vol 130-134 ◽  
pp. 1254-1257
Author(s):  
Zi Bo Wang ◽  
Liu Yan Su ◽  
Yu Jiang Guan ◽  
Shu Li Bai
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Industrial Applications ◽  
Photocatalytic Properties ◽  
Nanotube Arrays ◽  
Titanium Dioxide Nanotubes ◽  
Oxidation Method ◽  
Doped Titanium Dioxide ◽  
Anodic Oxidation Method ◽  
In Suit

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.

Influence of calcination on photocatalytic properties of nonstoichiometric titanium dioxide nanotubes

2019 ◽  
Vol 796 ◽  
pp. 293-299 ◽  
Author(s):  
Albina A. Valeeva ◽  
Irina B. Dorosheva ◽  
Ekaterina A. Kozlova ◽  
Robert V. Kamalov ◽  
Alexander S. Vokhmintsev ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Properties ◽  
Titanium Dioxide Nanotubes ◽  
Nonstoichiometric Titanium
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