Pengaruh Variasi Waktu Ultrasonikasi dan Waktu Tahan Hydrothermal terhadap Struktur dan Konduktivitas Listrik Material Graphene
Submission Date: 2014-02-06 11:21:57
Accepted Date: 2014-03-15 00:00:00
Abstract
Graphene merupakan satu lapis atom karbon yang mengalami hibridisasi sp2 membentuk struktur heksagonal 2D. Graphene memiliki potensi besar untuk aplikasi nanoelectronic materials. Penelitian ini bertujuan menganalisis waktu ultrasonikasi dan hidrothermal terbaik untuk mensintesis Graphene. Graphene disintesis dengan metode reduksi Grafit Oksida (GO). Grafit dioksidasi membentuk GO dengan modifikasi metode Hummer. GO diultrasonikasi dengan variasi waktu 60, 90 dan 120 menit. Kemudian proses reduksi GO dilakukan secara kimia dengan penambahan serbuk Zn dan teknik hidrothermal 200 oC dengan variasi waktu tahan 12, 18 dan 24 jam. Analisis morfologi dan struktur graphene dilakukan dengan pengujian SEM dan XRD. Pengujian Iodine Number untuk mengetahui kemampuan graphene menyerap Iodin. Pengujian FTIR untuk mengetahui gugus fungsi yang terbentuk pada GO dan Graphene. Pengujian Four Point Probe Test (FPP) untuk mengukur konduktivitas listrik Graphene. Hasil analsis menunjukkan bahwa graphene hasil ultrasonikasi 120 menit dan Holding 12 jam memiliki struktur Single Layer Graphene (SLG) dengan konduktivitas listrik terbaik 0.0105 S/m
Keywords
Graphene; Konduktivitas Listrik; Metode Hummer; Metode Hydrothermal
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