Sintesis dan Karakterisasi Sifat Optik Nanopartikel Silika yang Dilapisi Nanopartikel Emas
DOI:
https://doi.org/10.25077/jfu.7.1.21-26.2018Abstract
Telah dilakukan sintesis dan karakterisasi struktur dan sifat optik nanopartikel silika yang dilapisi nanopartikel emas. Sintesis dilakukan pada suhu 95 °C dengan variasi rasio mol APTES terhadap gugus silanol pada nanopartikel silika sebesar 1,0 dan 1,4 serta Au 0,1 dan 0,2 ml. Karakterisasi dilakukan menggunakan FTIR, SEM-EDS, dan Spektrofotometer UV-Vis. Spektrum FTIR menunjukkan adanya ikatan antara APTES dengan silika pada daerah serapan sekitar 1500 cm-1 dan keberadaan nanopartikel emas ditunjukkan dari hasil SEM-EDS. Karakterisasi SEM menunjukkan nanopartikel emas menempel pada permukaan silika. Respon magnetik sampel ditunjukkan dari hasil spektrofotometer UV-Vis dengan dua puncak yaitu resonansi dipol dan resonansi kuadrupol.
Kata kunci: APTES, nanopartikel emas, nanopartikel silika, respon magnetik, sifat optik
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Copyright (c) 2018 Ebriyen Zeni, Mulda Muldarisnur, Syukri Syukri
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