relation: https://eprints.untirta.ac.id/50870/
title: GREEN SYNTHESIS CARBON DOTS DARI LIMBAH KULIT MELON MENGGUNAKAN TEKNIK MICROWAVE UNTUK MENDETEKSI CEMARAN BESI (III) KLORIDA
creator: Putra, Azfa Restu
subject: L Education (General)
subject: QC Physics
description: This study aims to synthesize and characterize carbon dots (c-dots) from melon rind waste using green synthesis with microwave techniques, and test their potential as sensors to detect heavy metal contamination of iron (III) chloride or FeCl3. Melon rind was chosen as the base material because it is an abundant organic waste and has the potential as a carbon precursor. The synthesis process was carried out by microwave irradiation for 8 minutes, followed by characterisazion using Uv-Vis spectrophotometer and Photoluminescence (PL). Characterization results show that c-dots have absorbance peaks at wavelengths of 260 nm and 305 nm, as well as peak emission intensity at 453 nm. After the addition of FeCl3, there is a shift in the absorbance peak to 257 nm and 302 nm, and the emission peak to 448 nm, which indicates the interaction between Fe3+ ions and the surface of c-dots. The decrease in absorbance and fluorescence shift indicate that c-dots from melon rind have sensitivity to Fe3+ ions and can be used as a sensor to detect iron (III) chloride contamination precisely and efficiently. This research contributes to the utilization of organic waste and the development of environmentally friendly nanocarbon-based sensor materials.
date: 2025
type: Thesis
type: NonPeerReviewed
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identifier: https://eprints.untirta.ac.id/50870/1/AZFA%20RESTU%20PUTRA_220210027_FULL%20TEXT.pdf
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identifier: https://eprints.untirta.ac.id/50870/3/AZFA%20RESTU%20PUTRA_220210027_01.pdf
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identifier: https://eprints.untirta.ac.id/50870/4/AZFA%20RESTU%20PUTRA_220210027_02.pdf
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identifier: https://eprints.untirta.ac.id/50870/5/AZFA%20RESTU%20PUTRA_220210027_03.pdf
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identifier: https://eprints.untirta.ac.id/50870/6/AZFA%20RESTU%20PUTRA_220210027_04.pdf
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identifier: https://eprints.untirta.ac.id/50870/7/AZFA%20RESTU%20PUTRA_220210027_05.pdf
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identifier: https://eprints.untirta.ac.id/50870/8/AZFA%20RESTU%20PUTRA_220210027_REF.pdf
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identifier: https://eprints.untirta.ac.id/50870/9/AZFA%20RESTU%20PUTRA_220210027_LAMP.pdf
identifier:   Putra, Azfa Restu  (2025) GREEN SYNTHESIS CARBON DOTS DARI LIMBAH KULIT MELON MENGGUNAKAN TEKNIK MICROWAVE UNTUK MENDETEKSI CEMARAN BESI (III) KLORIDA.  S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.