Sintesis dan Karakterisasi Silica Gel dari Tetraetilortosilikat (TEOS) Menggunakan Surfaktan Polyethylene Glycol (PEG) 6000 dalam Kondisi Basa

Agus Salim Purwanto; Taslimah Taslimah; Sriatun Sriatun

doi:10.14710/jksa.15.1.1-6

DOI: https://doi.org/10.14710/jksa.15.1.1-6

Sintesis dan Karakterisasi Silica Gel dari Tetraetilortosilikat (TEOS) Menggunakan Surfaktan Polyethylene Glycol (PEG) 6000 dalam Kondisi Basa

Agus Salim Purwanto, Taslimah Taslimah

, Sriatun Sriatun

Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia

Published: 1 Apr 2012.

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Abstract

Penelitian tentang sintesis silika gel dari tetraetilortosilikat (TEOS) menggunakan surfaktan polyethylene glicol (PEG) 6000 dalam kondisi basa telah dilakukan. Penelitian ini bertujuan untuk menentukan pH optimum pembentukan gel tercepat untuk sintesis silica gel dan menentukan karakter silika gel hasil sintesis. Sintesis silica gel dilakukan dengan mencampurkan tetraetilortosilikat (TEOS), etanol, aquades, NH₄OH dan polietilen glikol (PEG) 6000. Penelitian ini dilakukan variasi pH 8-10 dan variasi konsentrasi PEG 6000 yaitu 0,01 g/100 mL; 0,03 g/100 mL; 0,06 g/100 mL. Silika gel hasil sintesis dikarakterisasi dengan spektrofotometer inframerah (FTIR), difraksi sinar-X (XRD) dan BET surface area analyzer. Diperoleh bahwa pH 9 sebagai pH optimum untuk pembentukan gel. Hasil analisis difraksi sinar-X (XRD) menunjukkan bahwa silika gel adalah amorf sedangkan hasil BET surface area analyzer menunjukkan bahwa silika gel termasuk dalam mesopori dengan volume total pori dan luas permukaan spesifik silika gel tertinggi diperoleh pada pH 9 dan dengan konsentrasi PEG 6000 0,03 g/100 mL yaitu masing-masing 124,574 cm³/g dan 285,456 m²/g.

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Keywords: silica gel; surfaktan; polyethylene glikol; PEG 6000; pori

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Section: Research Articles

Language : ID

In Vol 15, No 1 (2012): Volume 15 Issue 1 Year 2012

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