SINTESIS LAPIS TIPIS BERBASIS NANOPARTIKEL TITANIA TERMODIFIKASI SILIKA SECARA SOL-GEL SEBAGAI BAHAN ANTIFOGGING
(1) Gedung D6 Lantai 1 FMIPA Unnes Kampus Sekaran, Gunungpati, Semarang, Indonesia 50229
(2) Gedung D6 Lantai 1 FMIPA Unnes Kampus Sekaran, Gunungpati, Semarang, Indonesia 50229
(3) Gedung D6 Lantai 1 FMIPA Unnes Kampus Sekaran, Gunungpati, Semarang, Indonesia 50229
Abstract
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The research on synthesis of thin layer Based on TiO2 nanoparticle modified silica by sol gel as antifogging materials has been conducted to (i) determine the effect of calcination temperature on the gap energy, structure and size of crystal, and porous titania-silica, (ii) determine the effect of sol composition on thin layer titania-silica covering hydrophilic and transparent character, and (iii) determine the performance of antifogging thin layer titania-silica on glass substrate. The synthesis is done by using sol-gel method. Dye technique was used to coat the glass, and then applied as antifogging materials. The result of synthesis of TiO2-SiO2  was characterized  with XRD to determine the structure and size of crystal, with SEM-EDX to determine the morphology and composition of solid, and with DR-UV to determine the TiO2-SiO2  band-gap. The characterization shows that TiO2-SiO2 with 15% b/b silica in the temperature of 500°C has optimum particle size and band gap with each 11,15 nm and 3,20 eV. This result is consistent with minimum contact angle measurement of 14,49°. The result of antifogging performance test shows that thin layer TiO2-SiO2 is able to be used as antifogging material.
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