Sintesis dan Karakterisasi Fotoluminisens Carbon Dots Berbahan Dasar Organik dan Limbah Organik

Authors

  • Siti Fatimah Prodi Fisika, FMIPA Universitas Hasanuddin, Jalan perintis Kemerdekaan Km. 10, Tamalanrea, Makassar, Sulawesi Selatan, Indonesia
  • Isnaeni Isnaeni Pusat Penelitian Fisika, Lembaga Ilmu Pengetahuan Indonesia, Jalan Kawasan Puspitek No. 441-442, Setu, Tangerang Selatan, Banten , Indonesia
  • Dahlang Tahir Prodi Fisika, FMIPA Universitas Hasanuddin, Jalan perintis Kemerdekaan Km. 10, Tamalanrea, Makassar, Sulawesi Selatan, Indonesia

DOI:

https://doi.org/10.26418/positron.v7i2.22660

Keywords:

Carbon dots, fotoluminisens, panjang gelombang, intensitas, energi gap.

Abstract

Bahan dan limbah organik dapat disintesis menjadi CDs dengan metode green synthesis berbasis microwave assisted. Bahan organik yang digunakan adalah sawi, kentang, biji jagung dan limbah jagung (kulit dan tongkol jagung). Karakterisasi fotoluminisens (PL) digunakan untuk menunjukkan sifat optik CDs. Hasil karakterisasi PL dari CDs berbahan dasar bahan dan limbah organik menunjukkan panjang gelombang yang relatif sama yaitu 500 nm. Perbedaan CDs bahan dan limbah organik yaitu pada intensitas pendaran CDs. CDs biji jagung memiliki intensitas pendaran yang tinggi dibandingkan CDs yang berasal dari bahan organik lainya yaitu 42 a.u.. Sedangkan untuk limbah jagung memiliki panjang gelombang dan intensitas yang relatif sama. Besarnya energi gap yang dihasilkan dari CDs dari bahan organik berada disekitaran 2,46 eV, dimana berada pada rentang energi gap CDs. Hal ini menunjukkan bahwa bahan dan limbah organik dapat disintesis menjadi CDs dengan efektif, efisien, ekonomis dan ramah lingkungan.

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Published

2018-01-06

Issue

Vol. 7 No. 2 (2017)

Section

Articles

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