Fungsionalisasi Carbon Quantum Dots pada Nanopartikel Magnetik Fe3O4 untuk Aplikasi Fotokatalis

Wahfiudin, Aldiansyah (2025) Fungsionalisasi Carbon Quantum Dots pada Nanopartikel Magnetik Fe3O4 untuk Aplikasi Fotokatalis. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini bertujuan untuk mengembangkan fotokatalis yang efisien untuk degradasi polutan organik dengan menggabungkan Carbon Quantum Dots (CQDs) dan Superparamagnetic Iron Oxide Nanoparticles (SPIONs). CQDs dipilih karena memiliki karakteristik fotokatalitik unggul seperti spektrum absorpsi cahaya yang luas dan kelarutan air tinggi, sementara SPIONs dipilih untuk sifat magnetiknya yang memungkinkan recovery mudah setelah proses degradasi. Nanokomposit CQDs@Fe₃O₄ disintesis dengan berbagai rasio Fe₃O₄, yaitu 1:4 (M1C4), 2:4 (M2C4), dan 3:4 (M3C4), untuk mengevaluasi pengaruh rasio terhadap struktur, morfologi, dan aktivitas fotokatalitik. Analisis XRD menunjukkan struktur kristal magnetit yang tetap utuh setelah fungsionalisasi dengan CQDs. FTIR mengidentifikasi gugus fungsional yang berkaitan dengan CQDs, yang mengonfirmasi keberhasilan fungsionalisasi. Uji fotodegradasi mengungkapkan bahwa sampel M1C4 memiliki performa degradasi tertinggi, menyoroti pentingnya rasio campuran dalam optimalisasi aktivitas fotokatalitik. Hasil ini menunjukkan potensi besar CQDs@Fe₃O₄ sebagai fotokatalis untuk aplikasi remediasi lingkungan, dengan keunggulan tambahan berupa kemudahan recovery menggunakan sifat magnetik SPIONs. Metode sintesis yang efisien menggunakan bahan baku alami seperti pasir pantai juga memberikan keuntungan dari segi biaya dan energi
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This study aims to develop efficient photocatalysts for the degradation of organic pollutants by combining Carbon Quantum Dots (CQDs) and Superparamagnetic Iron Oxide Nanoparticles (SPIONs). CQDs were selected due to their superior photocatalytic characteristics such as broad light absorption spectrum and high water solubility, while SPIONs were selected for their magnetic properties that allow easy recovery after degradation process. CQDs@Fe₃O₄ nanocomposites were synthesized with various Fe₃O₄ ratios, namely 1:4 (M1C4), 2:4 (M2C4), and 3:4 (M3C4), to evaluate the effect of the ratio on the structure, morphology, and photocatalytic activity. XRD analysis showed that the crystal structure of magnetite remained intact after functionalization with CQDs. FTIR identified functional groups associated with CQDs, confirming the successful functionalization. Photodegradation tests revealed that the M1C4 sample had the highest degradation performance, highlighting the importance of the mixture ratio in optimizing photocatalytic activity. These results demonstrate the great potential of CQDs@Fe₃O₄ as photocatalysts for environmental remediation applications, with the additional advantage of easy recovery using the magnetic properties of SPIONs. The efficient synthesis method using natural raw materials such as beach sand also provides advantages in terms of cost and energy

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Carbon Dots, Fe3O4, Degradasi fotokatalitik, Water splitting, Carbon Dots, Fe3O4, Photocatalytic degradation, Water splitting
Subjects:	Q Science > QC Physics > QC475 Photoluminescence Q Science > QC Physics > QC765 Magnetic materials Q Science > QD Chemistry > QD716 Photocatalysis.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 27101-(S2) Master Thesis
Depositing User:	Aldiansyah Wahfiudin
Date Deposited:	30 Jan 2025 08:44
Last Modified:	30 Jan 2025 08:44
URI:	http://repository.its.ac.id/id/eprint/117111

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