Fluorine ions-mediated morphology control of anatase TiO2 with enhanced photocatalytic activity

2012 ◽  
Vol 14 (16) ◽  
pp. 5349 ◽  
Author(s):  
Kangle Lv ◽  
Bei Cheng ◽  
Jiaguo Yu ◽  
Gang Liu
Keyword(s):  
Photocatalytic Activity ◽  
Morphology Control ◽  
Anatase Tio2 ◽  
Fluorine Ions

First-Principles Study on Electronic and Optical Properties in Pr-Doped Anatase TiO2

2014 ◽  
Vol 924 ◽  
pp. 260-268 ◽  
Author(s):  
Hao Chen ◽  
Lan Fang Yao ◽  
Song Lin Yang ◽  
Ya Qin Wang ◽  
Xing Liang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photocatalytic Activity ◽  
First Principles ◽  
Energy Gap ◽  
Impurity Band ◽  
Anatase Tio2 ◽  
Electron Hole ◽  
Light Region ◽  
Overlap Population ◽  
Calculation Results

The crystal structures, band structures, density of states, charge density, overlap population and optical properties of pure anatase TiO2 and Pr-doped anatase TiO2 were studied by using the plane-wave pseudopotential method based on the first-principles. After Pr doping, the valence band and the conduction band moved down and became dense, energy gap became narrow and a impurity band which consists of Pr 4f states appeared. And the dipole moment got improved, which is good for the separate of the electron-hole pairs. These effectively overcome two huge shortcomings of TiO2. Besides, Pr-doped anatase TiO2 produced more carriers which have good transport properties and the absorption spectra of Pr-O bond appear in the region that the wavelength is longer. The calculation results of optical properties show that the absorption edge occured red shift, which means the photocatalytic activity of anatase TiO2 got remarkable improved during visible-light region. This conforms to the previous analysis. So the photocatalytic activity of anatase TiO2 got remarkable improved after Pr doping.

Enhancing Photocatalytic Activity of Au-Capped CdS–PbS Heterooctahedrons by Morphology Control

2020 ◽  
Vol 124 (14) ◽  
pp. 7938-7945
Author(s):  
Kai Chen ◽  
Si-Jing Ding ◽  
Song Ma ◽  
Wei Wang ◽  
Shan Liang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Morphology Control

Morphology Control and Photocatalytic Activity Of TiO2 Film

2016 ◽  
pp. 43-55
Author(s):  
Jinshu Wang ◽  
Hongyi Li ◽  
Junshu Wu ◽  
Qian Cai ◽  
Yilong Yang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Tio2 Film ◽  
Morphology Control

scholarly journals Enhanced photocatalytic bacterial inactivation of atomic-layer deposited anatase-TiO2 thin films on rutile-TiO2 nanotubes

2020 ◽  
Vol 19 (3) ◽  
pp. 399-405
Author(s):  
Joel Molina-Reyes ◽  
Alejandra Romero-Morán ◽  
José L. Sánchez-Salas
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Tio2 Nanotubes ◽  
Considerable Increase ◽  
Atomic Layer ◽  
Surface Modifications ◽  
Anatase Tio2 ◽  
Bacterial Inactivation ◽  
Tio2 Thin Films ◽  
Experimental Conditions

Experimental conditions to fabricate rutile-TiO2 nanotubes coated with a conformal anatase-TiO2 thin layer using ALD were reported. A considerable increase in the photocatalytic activity associated with these surface modifications was also observed.

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