Effect of Fe addition on phase transformation of titanium dioxide nanocrystals prepared by Pechini-type sol–gel method

2012 ◽  
Vol 7 (8) ◽  
pp. 872 ◽  
Author(s):  
M. Gharagozlou ◽  
Y. Ganjkhanlou
2013 ◽  
Vol 685 ◽  
pp. 150-154
Author(s):  
Akhlaq Ahmad ◽  
Liaqat Ali ◽  
Naveed Ramzan

Titanium dioxide also known as titania is a ceramic material. It is probably the most investigated inorganic oxide in recent years because of its non toxic nature, chemical stability and its potential effectiveness for destruction of toxic organic compounds in industrial effluents. In the present study pure and Ta doped TiO2 nanosize particles were prepared by sol-gel method. Samples with doping concentrations varying from 0.50 to 1.50 at % Ta and calcinations temperatures from 300 to 900 oC were synthesized. Changes taken place in phase transformation of the samples doped with Ta and undoped TiO2 were investigated. The effect of dopant concentration, calcinations temperature and particles size on anatase to rutile phase transformation was studied in detail. The samples were analyzed by various standard analytical tools.


2018 ◽  
Vol 226 ◽  
pp. 03014
Author(s):  
Vitaly A. Tarala ◽  
Alexander A. Dolgalev ◽  
Alexander A. Kravtsov ◽  
Irina S. Chikulina ◽  
Boris V. Bukhalov

Within the framework of the study, TiO2 coatings were obtained by sol-gel method via dip-coating. For the films obtaining, manual drawing the substrate from the solution at a relatively high rate of 30 mm / min and automated drawing from the solution at low drawing rates (from 1 to 10 mm / min) were used. The morphology of coatings has been studied by scanning electron microscopy. The influence of the mode and the rate of drawing of the substrate from the solution on the films morphology was demonstrated. Analysis of the data showed, that the surface morphology of the coatings obtained at lower drawing rates by an automated method is much more homogeneous - the titanium dioxide films completely repeats the topography of the substrate surface, there are practically no fissures. Qualitative coatings of titanium dioxide, completely replicating the surface relief of the substrate, can be obtained by this method. Selection of the substrate drawing rate allows reducing the influence of the substrate topography and avoiding the appearance of crystallization centers, and as a consequence, the appearance of defects in the morphology of coatings, such as fissures or microparticles.


2011 ◽  
Vol 44 (3) ◽  
pp. 550-554 ◽  
Author(s):  
Jianjun Tian ◽  
Hongmei Deng ◽  
Lin Sun ◽  
Hui Kong ◽  
Pingxiong Yang ◽  
...  

2018 ◽  
Vol 10 (7) ◽  
pp. 695-699 ◽  
Author(s):  
Shikha Srivastava ◽  
S. P. Gautam ◽  
Richa Srivastava ◽  
A. K. Yadav ◽  
B. C. Yadav

2008 ◽  
Vol 109 (2-3) ◽  
pp. 275-280 ◽  
Author(s):  
An-Cheng Lee ◽  
Rong-Hsien Lin ◽  
Chih-Yuan Yang ◽  
Ming-Hui Lin ◽  
Wen-Yuan Wang

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