Temperature dependence of the titanium oxide sols precipitation kinetics in the sol–gel process

2004 ◽  
Vol 398 (1-3) ◽  
pp. 157-162 ◽  
Author(s):  
M. Rivallin ◽  
M. Benmami ◽  
A. Gaunand ◽  
A. Kanaev
Keyword(s):  
Temperature Dependence ◽  
Titanium Oxide ◽  
Sol Gel ◽  
Precipitation Kinetics ◽  
Sol Gel Process

Effect of organic gelator template and preparation method on the structure and morphology of nanosized polymorphic titanium oxide using the sol–gel process

2011 ◽  
Vol 38 (3-5) ◽  
pp. 685-692
Author(s):  
Tae Kyu Kim ◽  
Euh Duck Jeong ◽  
Mee Sung Lee ◽  
Jong-Pil Kim ◽  
Myung Ho Hyun ◽  
...  
Keyword(s):  
Titanium Oxide ◽  
Preparation Method ◽  
Sol Gel ◽  
Structure And Morphology ◽  
Sol Gel Process

Preparation of Titanium Oxide and Metal Titanates as Powders, Thin Films, and Microspheres by Novel Inorganic Sol-Gel Process

2005 ◽  
Vol 900 ◽  
Author(s):  
A. Deptuła ◽  
Kenneth C Goretta ◽  
Tadeusz Olczak ◽  
Wieslawa Lada ◽  
Andrzej G. Chmielewski ◽  
...  
Keyword(s):  
Thin Films ◽  
Ascorbic Acid ◽  
Nitric Acid ◽  
Titanium Oxide ◽  
Sol Gel ◽  
Solid State Reactions ◽  
X Ray Diffraction ◽  
Metal Hydroxides ◽  
X Ray ◽  
Sol Gel Process

ABSTRACTTitanium oxide and titanates based on Ba, Sr and Ca were prepared from commercial solutions of TiCl4 and HNO3. The main preparation steps for the sols consisted of elimination of chloride anions by distillation with nitric acid and addition of metal hydroxides for the titanates. Resulting sols were gelled and used to (1) prepare irregularly shaped powders by evaporation; (2) produce by a dipping technique thin films on glass, Ag, or Ti substrates; and (3) produce spherical powders (diameters <100 μm) by solvent extraction. Results of thermal and X-ray-diffraction analyses indicated that the temperatures required to form the various compounds were lower than those necessary to form the compounds by conventional solid-state reactions and comparable to those required with use of organometallic based sol-gel methods. Temperatures of formation could be further reduced by addition of ascorbic acid to the sols.

COMPARATIVE STUDY OF Bi-2223/Ag SUPERCONDUCTORS DERIVED FROM PARTICLES SIZE OF STARTING MATERIALS

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3246-3249 ◽  
Author(s):  
D. SÝKOROVÁ ◽  
O. SMRČKOVÁ ◽  
K. RUBEŠOVÁ ◽  
P. VAŠEK
Keyword(s):  
Solid State ◽  
Comparative Study ◽  
Temperature Dependence ◽  
Solid State Reaction ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Sol Gel Process ◽  
Current Densities ◽  
Size Of Particles ◽  
Micrometer Size

Series of the samples with nominal compositions Bi 3.2 Pb 0.8 Sr 4 Ca 5 Cu 7 O x and Bi 3.2 Pb 0.8 Sr 4 Ca 5 Cu 7 O x / Ag (10 wt%) were prepared by the standard solid state reaction at the same calcination and sintering temperature and time. Three starting mixtures were used, carbonates, oxides and silver i) with nanoparticles, ii) with micrometer size of particles and iii) powder obtained by modified sol-gel process. The main phase in all samples was Bi -2223 and silver formed the separate phase. The sol-gel process was found to be effective way in term of porosity, bulk density and connectivity of the grains. The effect of the microstructure on the transport properties were described by the temperature dependence of resistivity and critical current densities.

Photoluminescent, self-cleaning titanium oxide nanocomposites with multifunctional properties

RSC Advances ◽  
2014 ◽  
Vol 4 (106) ◽  
pp. 61727-61735 ◽  
Author(s):  
Venu Sreekala Smitha ◽  
Saju Pillai ◽  
Unnikrishnan Nair Saraswathy Hareesh ◽  
Balagopal N. Nair ◽  
Krishna Gopakumar Warrier
Keyword(s):  
Titanium Oxide ◽  
Sol Gel ◽  
Sol Gel Process ◽  
Self Cleaning ◽  
Multifunctional Properties

Novel multifunctional luminescent and self-cleaning nanocomposites and coatings of Eu doped TiO2–SiO2–LaPO4 (Eu-TSL) were synthesized from an aqueous sol–gel process which possess photoactivity, low wettability and photoluminescent properties.

Temperature dependence of optical and structural properties of ferroelectric B3.15Nd0.85Ti3O12 thin film derived by sol–gel process

2011 ◽  
Vol 61 (1) ◽  
pp. 236-242 ◽  
Author(s):  
Yongyuan Zang ◽  
Dan Xie ◽  
Yu Chen ◽  
Mohan Li ◽  
Chen Chen ◽  
...  
Keyword(s):  
Thin Film ◽  
Temperature Dependence ◽  
Structural Properties ◽  
Sol Gel ◽  
Sol Gel Process
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