Silica aerogels have received much attention in recent years as it has got a wide range of properties like high surface area, low density, high porosity, low dielectric constant, low thermal conductivity. Recently to make ...

An all aqueous sol gel process for developing photoactive titania ultrafiltration membranes on tubular macroporous commercial alumina substrate is presented. The precursor for titania was titanylsulfate and a multilayer ...

Silica aerogels were synthesised by subcritical drying technique which involves controlled solvent exchange and aging of the wet gel in silane solution followed by drying under controlled conditions. Effect of temperature ...

The effect of the addition of tantalum to nanocrystalline titania matrix on the photocatalytic activity is presented. The tantalum addition increases the anatase phase stability to above 1000 degrees C by inhibiting the ...

The present investigation is related to synthesis of high surface area lanthanum phosphate by an aqueous sol-gel process involving post gelation treatment by solvent exchange resulting in a soft agglomerated gel. Precursor ...

Silica-alumina mixed oxide aerogels, with 5, 10, 15, 20, and 25 wt% of alumina in silica, have been synthesized by a hybrid sol-gel technique followed by subcritical drying. The gelation has been carried out under pH values ...

Silica–biopolymer hybrid has been synthesised using colloidal silica as the precursor for silica and gelatin as the biopolymer counterpart. The surface modification of the hybrid material has been done with methyltrimethoxysilane ...

Highly porous organic inorganic hybrid networks have been prepared from tetraethoxysilane (TEOS) and 3-glycidoxypropyltrimethoxysilane (GPTMS) precursors by drying at ambient pressure. Hydrolysis–condensation reactions ...