What is a sol-gel system?
What is a sol-gel system?
Sol–gel is a wet-chemical process that involves the formation of an inorganic colloidal suspension (sol) and gelation of the sol in a continuous liquid phase (gel) to form a three-dimensional network structure. From: Corrosion Protection and Control Using Nanomaterials, 2012.
What is sol-gel method in nanotechnology?
The sol-gel process is a more chemical method (wet chemical method) for the synthesis of various nanostructures, especially metal oxide nanoparticles. In this method, the molecular precursor (usually metal alkoxide) is dissolved in water or alcohol and converted to gel by heating and stirring by hydrolysis/alcoholysis.
What is sol method?
The method is used for the fabrication of metal oxides, especially the oxides of silicon (Si) and titanium (Ti). The process involves conversion of monomers into a colloidal solution (sol) that acts as the precursor for an integrated network (or gel) of either discrete particles or network polymers.
Who invented sol-gel method?
Dr. Jeffrey Brinker is a pioneer in the synthesis of materials and sol-gel-science and sets an important guideline for the flowering of the sol-gel method [2].
What is difference between sol and gel?
Sol is a liquid state of colloidal solution whereas gel is a solid or semisolid state of colloidal solution. No definite structure is present for sols whereas generally a honeycomb like structure is present for gel. A sol constitutes a uniformly dispersed solid in a fluid.
What is type of sol?
There are two generic variations of the sol-gel technique, the colloidal route and the polymeric (or alkoxide) route. For the colloidal sol-gel route, the sol is created by dispersing fine particles in a liquid which is often water.
What is sol particle?
sol, in physical chemistry, a colloid (aggregate of very fine particles dispersed in a continuous medium) in which the particles are solid and the dispersion medium is fluid. If the dispersion medium is water, the colloid may be called a hydrosol; and if air, an aerosol.
What is sol example?
A sol is a colloid made out of solid particles in a continuous liquid medium. Sols are quite stable and show the Tyndall effect. Examples include blood, pigmented ink, cell fluids, paint, antacids and mud. Artificial sols may be prepared by dispersion or condensation.
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