Highly stable re-dispersibility of nanocrystalline TiO2observed during anatase-rutile phase transformation

2009 ◽  
Vol 206 (7) ◽  
pp. 1520-1524 ◽  
Author(s):  
Yanting Li ◽  
Xiuguo Sun ◽  
Huiwan Li ◽  
Yu Wei
Keyword(s):  
Phase Transformation ◽  
Rutile Phase

Study on the Anatase to Rutile Phase Transformation and Controlled Synthesis of Rutile Nanocrystals with the Assistance of Ionic Liquid

Langmuir ◽  
2010 ◽  
Vol 26 (12) ◽  
pp. 10294-10302 ◽  
Author(s):  
Kunlun Ding ◽  
Zhenjiang Miao ◽  
Baoji Hu ◽  
Guimin An ◽  
Zhenyu Sun ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Phase Transformation ◽  
Rutile Phase ◽  
Controlled Synthesis

Effect of nitrogen doping on anatase–rutile phase transformation of TiO2

2012 ◽  
Vol 258 (20) ◽  
pp. 7997-8001 ◽  
Author(s):  
Xianzhong Bu ◽  
Gaoke Zhang ◽  
Chonghui Zhang
Keyword(s):  
Phase Transformation ◽  
Nitrogen Doping ◽  
Rutile Phase

scholarly journals Study on the Phase Transformation Kinetics of Sol-Gel DrivedTiO2Nanoparticles

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
H. Mehranpour ◽  
M. Askari ◽  
M. Sasani Ghamsari ◽  
H. Farzalibeik
Keyword(s):  
Activation Energy ◽  
Phase Transformation ◽  
Sol Gel ◽  
Rutile Phase ◽  
Transformation Kinetics ◽  
X Ray ◽  
Prepared Nanoparticles ◽  
Phase Transformation Kinetics ◽  
Diffusion Controlled ◽  
Kinetics Of

Titanium dioxide nanopowders were synthesized by the diffusion controlled sol-gel process (LaMer model) and characterized by DTA-TG, XRD, and SEM. The preparedTiO2nanoparticles have uniform size and morphology, and the phase transformation kinetics of obtained material was studied by interpretation of the X-ray diffraction patterns peaks on the base of Avrami equation. The stating point of anatase-rutile phase transformation temperature in the prepared nanoparticles was found between 100 and200°C. A decreasing trend on the intensity of X-ray peaks of anatase phase was observed up to600°Cwhen the presence of the rutile phase became predominant. Results indicated that the transition kinetics of the diffusion controlled prepared nanoparticles was begun at low temperature, and it can be concluded that the nucleation and growth sites in these particles were more than other. However, it has been found that the nucleation activation energy of rutile phase was 20 kj/mol, and it is the lowest reported activation energy.

Size-Dependent Anatase to Rutile Phase Transformation and Particle Growth

2012 ◽  
Vol 25 (8) ◽  
pp. 1408-1415 ◽  
Author(s):  
Kairat Sabyrov ◽  
Nathan D. Burrows ◽  
R. Lee Penn
Keyword(s):  
Phase Transformation ◽  
Particle Growth ◽  
Rutile Phase ◽  
Size Dependent

The effect of tin dioxide (SnO2) on the anatase-rutile phase transformation of titania (TiO2) in mica-titania pigments and their use in paint

2011 ◽  
Vol 90 (2) ◽  
pp. 123-128 ◽  
Author(s):  
Berna Burcu Topuz ◽  
Güngör Gündüz ◽  
Bora Mavis ◽  
Üner Çolak
Keyword(s):  
Phase Transformation ◽  
Tin Dioxide ◽  
Rutile Phase

Electrophoretic Deposition of TiO2 Nanoparticles on Dense TiO2-x Ceramic Electrodes

2016 ◽  
Vol 721 ◽  
pp. 177-181
Author(s):  
Inga Narkevica ◽  
Laura Stradina ◽  
Liga Stipniece ◽  
Jurijs Ozolins
Keyword(s):  
Phase Transformation ◽  
Deposition Time ◽  
Thermal Stresses ◽  
Surface Damage ◽  
Rutile Phase ◽  
Deposition Parameters ◽  
Deposition Voltage ◽  
Deposition Yield ◽  
Ceramic Electrodes

TiO2 nanoparticles were electrophoretically deposited on the dense TiO2-x ceramic electrodes from suspension containing TiO2 nanoparticles, isopropanol as a solvent and triethanolamine as dispersant. The effect of deposition parameters including deposition voltage (10 to 60 V) and deposition time (10 to 40 min) on the microstructure and deposition yield was examined. It was found that the thickness of coating increased with increasing deposition time and deposition voltage. However, it affected the quality of obtained coating e.g. cracks and holes were observed. Optimizing deposition parameters homogeneous coating with smooth microstructure and limited surface damage can be obtained. Thermal treatment of the coating in the temperature range from 700 to 1100 °C causes anatase to rutile phase transformation. Crack formation was noted during sintering due to the phase transformation and thermal stresses.

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