SINTESIS NANO SILIKA GEL DARI ABU GUNUNGAPI MERAPI DENGAN POLIETILEN GLIKOL P-(1,1,3,3- TETRAMETILBUTIL)-FENIL ETER (TRITON X100); SYNTHESIS OF NANO SILICA GEL USING PRECURSOR OF MERAPI VOLCANIC ASH WITH POLYETHYLENE GLYCOL P-(1,1,3,3- TETRAMETHYLBUTYL)-PHENYL ETHER (TRITON X100)

Hariman Hi. Djumat, Roto

2013 | Disertasi | Program Studi S1 Kimia

Nano silica gel was synthesized from Merapi volcanic ash. Prior to the synthesis, sodium silicate was produced by fusing the volcanic ash with sodium hydroxide at 900 oC. The fused silica was dissolved in hot water to give sodium silicate solution. Hydrolisis of sodium silicate was done with HCl in the solution containing triton X100. Products were analyzed by XRD, FTIR, and TEM. The produced nano silica gel was found to be amorphous with broad diffraction pattern centered at 2? 23o. FTIR spectra show that the silica gel has silanol (Si-OH) and siloxane (Si-O-Si) groups. The size of the particles is in the range of 20–50 nm.

Kata Kunci : Abu vulkanik gunungapi Merapi; Nano silika gel; Hidrolisis; Triton X100.