relation: https://eprints.untirta.ac.id/50467/
title: APLIKASI CARBON DOTS MENGGUNAKAN LIMBAH KULIT SALAK DENGAN METODE BOTTOM-UP UNTUK MENDETEKSI ION LOGAM Fe³⁺
creator: Fitri, Amelia Febriana
subject: L Education (General)
subject: Q Science (General)
subject: QC Physics
description: This research aims to synthesize and characterize Carbon Dots (C-Dots) derived from salak peel waste using a bottom-up approach through microwave irradiation, and to evaluate their application as optical sensors for detecting Fe³⁺ heavy metal ions. Salak peel was selected due to its abundance and underutilization. The synthesis process involved blending the salak peel with distilled water, then using a microwave. The resulting C-Dots were qualitatively tested under UV light and further characterized using UV-Vis and photoluminescence (PL) spectroscopy. UV-Vis characterization showed that the C-Dots exhibited a primary absorbance peak at 272 nm, which shifted to 269 nm upon the addition of Fe³⁺ ions (10⁻⁶ M), accompanied by a decrease in absorbance intensity. This indicates complexation interactions between surface functional groups on the C-Dots and Fe³⁺ ions. PL analysis revealed an increase in emission intensity with a peak shift from 467 nm to 462 nm after Fe³⁺ addition, attributed to surface defect passivation by the metal ions. This study concludes that C-Dots synthesized from salak peel waste have significant potential as environmentally friendly and sensitive fluorescent sensors for Fe³⁺ ion detection.
date: 2025
type: Thesis
type: NonPeerReviewed
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identifier: https://eprints.untirta.ac.id/50467/1/AMELIA%20FEBRIANA%20FITRI_2280210029_FULL%20TEXT.pdf
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identifier: https://eprints.untirta.ac.id/50467/2/AMELIA%20FEBRIANA%20FITRI_2280210029_CP.pdf
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identifier: https://eprints.untirta.ac.id/50467/3/AMELIA%20FEBRIANA%20FITRI_2280210029_01.pdf
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identifier: https://eprints.untirta.ac.id/50467/4/AMELIA%20FEBRIANA%20FITRI_2280210029_02.pdf
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identifier: https://eprints.untirta.ac.id/50467/5/AMELIA%20FEBRIANA%20FITRI_2280210029_03.pdf
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identifier: https://eprints.untirta.ac.id/50467/6/AMELIA%20FEBRIANA%20FITRI_2280210029_04.pdf
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identifier: https://eprints.untirta.ac.id/50467/7/AMELIA%20FEBRIANA%20FITRI_2280210029_05.pdf
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identifier: https://eprints.untirta.ac.id/50467/8/AMELIA%20FEBRIANA%20FITRI_2280210029_REF.pdf
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identifier: https://eprints.untirta.ac.id/50467/9/AMELIA%20FEBRIANA%20FITRI_2280210029_LAMP.pdf
identifier:   Fitri, Amelia Febriana  (2025) APLIKASI CARBON DOTS MENGGUNAKAN LIMBAH KULIT SALAK DENGAN METODE BOTTOM-UP UNTUK MENDETEKSI ION LOGAM Fe³⁺.  S1 thesis, Universitas Sultan Ageng Tirtayasa.