Structural and hydrophobic–hydrophilic properties of nanosilica/zirconia alone and with adsorbed PDMS
Abstract(#br)Two nanosilica A-300/zirconia (SZ) composites at zirconia content C ZrO 2 = 5 and 20\u003cce:hsp sp=\"0.25\"/\u003ewt.% were synthesized using a wet impregnation method with zirconium acetylacetonate as a precursor. The specific surface area of SZ is larger than that of A-300 because zirconia is composed of nanoparticles (crystallites of 4\u003cce:hsp sp=\"0.25\"/\u003enm in average size at C ZrO 2 = 20 wt . % ) smaller than those of the initial silica ( d av \u003cce:hsp sp=\"0.25\"/\u003e≈\u003cce:hsp sp=\"0.25\"/\u003e11\u003cce:hsp sp=\"0.25\"/\u003enm).