relation: https://eprints.untirta.ac.id/52593/
title: GREEN SYNTHESIS CARBON DOTS BERBAHAN DASAR KULIT PARE DENGAN TEKNIK IRADIASI GELOMBANG MIKRO SEBAGAI DETEKTOR ION LOGAM BERAT Fe3+
creator: Raihan, Kaila
subject: QC Physics
description: This research focuses on the synthesis and characterization of green-synthesized carbon dots (CDs) derived from bitter melon (Momordica charantia) peel extract, with the objective of assessing their applicability as fluorescent probes for the detection of Fe³⁺ heavy metal ions. The CDs were fabricated via a microwave-assisted method, which is recognized for its simplicity, rapid processing, and environmental sustainability. Ultraviolet-visible (UV-Vis) spectroscopy revealed a prominent absorption peak at 239 nm, attributed to π→π* transitions of C=C bonds, and a minor peak at 668 nm. Photoluminescence (PL) analysis demonstrated two primary emission peaks at 457 nm and 490 nm. Upon the introduction of FeCl₃ at a concentration of 10⁻⁵ M, a substantial enhancement in PL intensity was observed, increasing from 15.640 to 22.988 and from 15.907 to 27.165, respectively. This fluorescence enhancement is presumed to result from complexation between Fe³⁺ ions and surface functional groups on the CDs, which suppresses non-radiative recombination pathways and promotes radiative emission processes. The findings suggest that these green-synthesized carbon dots, prepared through microwave irradiation, exhibit promising potential as environmentally benign, turn-on detection sensors for Fe³⁺ ion detection
date: 0025-07-24
type: Thesis
type: NonPeerReviewed
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identifier: https://eprints.untirta.ac.id/52593/1/Kaila%20Raihan_2280210030_Fulltext.pdf
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identifier: https://eprints.untirta.ac.id/52593/4/Kaila%20Raihan_2280210030_02.pdf
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identifier: https://eprints.untirta.ac.id/52593/5/Kaila%20Raihan_2280210030_03.pdf
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identifier: https://eprints.untirta.ac.id/52593/6/Kaila%20Raihan_2280210030_04.pdf
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identifier: https://eprints.untirta.ac.id/52593/7/Kaila%20Raihan_2280210030_05.pdf
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identifier: https://eprints.untirta.ac.id/52593/15/Kaila%20Raihan_2280210030_Ref.pdf
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identifier: https://eprints.untirta.ac.id/52593/16/Kaila%20Raihan_2280210030_Lamp.pdf
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identifier: https://eprints.untirta.ac.id/52593/17/Kaila%20Raihan_2280210030_01-.pdf
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identifier: https://eprints.untirta.ac.id/52593/18/Kaila%20Raihan_2280210030_CP-.pdf
identifier:   Raihan, Kaila  (0025) GREEN SYNTHESIS CARBON DOTS BERBAHAN DASAR KULIT PARE DENGAN TEKNIK IRADIASI GELOMBANG MIKRO SEBAGAI DETEKTOR ION LOGAM BERAT Fe3+.  S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.