1. Sol- Gel Technology
Aytan Muradova

2. Introduction Hydrolyses Polymerization Growth of nanostructures
Agglomeration

3. The prime requisite for obtaining good quality in this technology
Variation of PH
Temperature
Time
Concentration of Reagent
Concentration of Catalyzor
H2O/Si
Phase transition Sol Gel
Drying

4. Sol- Gel Processing RO Me or Me salt +H2O Stabilizer
Nanodisperse Oxide Sol
(Particulate or Polymeric)
-H2O
Gel
-H2O
Xerogel
T > 400 C
-H2O
-Stabilizer
Porous Oxide

5. Gel Sol For example aerosol Homogeneous mixture With diameter20-50nm
Nitration with NaOH
Drying
Nitration with NH4OH
Gel
Annealing with C
Xerogel
Adding (CuNO3)2
Drying in air
Drying with H in 1200 C and 1atm
Glass of Nanoparticles

6. Preparation of thin films
RO3=Si-OR + H2O
(RO)3=Si-O-Si+ R-OH (Hydrolyses)
(RO)3=Si-OH+(RO)3=Si-OR
(RO)3=Si-OSi=(RO)3+ ROH
(RO)3=Si-OH+HO-Si+(RO)3
(RO)3+Si-O-Si=(RO)3+H2O

7. Thank you for attention!