Optimasi Nanokomposit Green-Synthesized Fe3O4/CDOTS dan aplikasinya untuk degradasi limbah Methylene Blue

Lestari, Citra Dwi (2024) Optimasi Nanokomposit Green-Synthesized Fe3O4/CDOTS dan aplikasinya untuk degradasi limbah Methylene Blue. Sarjana thesis, UIN Sunan Gunung Djati Bandung.

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Abstract

Indonesia: Nanokomposit Fe3O4/CDots dengan menggabungkan Fe3O4 yang disintesis menggunakan ekstrak Moringa oleifera dan CDots yang dihasilkan dari kulit semangka telah berhasil dilakukan. Penggabungan dilakukan melalui proses sonikasi, menghasilkan sampel FO/C1, FO/C2, FO/C3, FO/C4, dan FO/C5. Hasil uji menggunakan X-ray diffractometer menunjukkan bahwa struktur kristal nanokomposit bersifat cubic inverse spinel. Adanya CDots mengakibatkan penurunan ukuran kristalit Fe3O4 yaitu (10,6 ± 0,1), dan ukuran Fe3O4/CDots yaitu (8,4 ± 0,1). Analisis Fourier transform infrared mengonfirmasi terbentuknya nanokomposit Fe3O4/CDots dengan munculnya gugus fungsi Fe-O dan C=C. Spektrum absorbansi nanokomposit menunjukkan profil dominan dari Fe3O4, dengan peningkatan energi celah pita pada rentang 2,65 – 2,77 eV. Penempelan CDots pada Fe3O4 terindikasi melalui pendaran yang dihasilkan pada uji photoluminescence. Dalam pengujian aktivitas fotokatalitik, FO/C1 mampu mendegradasi limbah pewarna organik methylene blue hingga 96,7% dalam 10 menit radiasi UV. Oleh karena itu, Fe3O4/CDots memiliki potensi sebagai agen penghilang logam berat dan fotokatalis yang menjanjikan untuk remediasi lingkungan yang efektif dan efisien. English: Fe3O4/CDots nanocomposites by combining Fe3O4 synthesized using Moringa oleifera extract and CDots produced from watermelon rinds have been successfully carried out. The combination was carried out through a sonication process, producing samples FO/C1, FO/C2, FO/C3, FO/C4, and FO/C5. Test results using an X-ray diffractometer show that the crystal structure of the nanocomposite is a cubic inverse spinel. The presence of CDots resulted in a decrease in the size of Fe3O4 crystallites, namely (10,6 ± 0,1), and the size of Fe3O4/CDots, namely (8,4 ± 0.1). Fourier transform infrared analysis confirmed the formation of Fe3O4/CDots nanocomposites with the appearance of Fe-O and C=C functional groups. The absorbance spectrum of the nanocomposite shows a dominant profile of Fe3O4, with an increase in band gap energy in the range of 2,65 – 2,77 eV. The attachment of CDots to Fe3O4 is indicated by the luminescence produced in the photoluminescence test. In testing photocatalytic activity, FO/C1 was able to degrade methylene blue organic dye waste up to 96,7% in 10 minutes of UV radiation. Therefore, Fe3O4/CDots have potential as promising heavy metal removal agents and photocatalysts for effective and efficient environmental remediation.

Item Type: Thesis (Sarjana)
Uncontrolled Keywords: Nanokomposit Fe3O4/CDots; green synthesis; Moringa oleifera; fotokatalis; methylene blue;
Subjects: Light, Infrared and Ultraviolet Phenomena
Modern Physics > Atomic and Nuclear Physics
Medicine and Health
Engineering > Composite Materials
Applied Physics
Technology of Industrial Chemicals > Synthetic Chemicals
Techniques and Procedures
Divisions: Fakultas Sains dan Teknologi > Program Studi Fisika
Depositing User: Citra Dwi Lestari
Date Deposited: 28 Mar 2024 03:19
Last Modified: 28 Mar 2024 03:19
URI: https://digilib.uinsgd.ac.id/id/eprint/86117

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