Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/171894
Title: Highly fluorescent nitrogen-doped carbon dots derived from jengkol peels (Archindendron pauciflorum) by solvothermal synthesis for sensitive Hg²⁺ ions detection
Authors: Prayugo, Aniza Salviana
Marpongahtun
Gea, Saharman
Daulay, Amru
Harahap, Mahyuni
Siow, Jonathan
Goei, Ronn
Tok, Alfred Iing Yoong
Keywords: Engineering::Bioengineering
Issue Date: 2023
Source: Prayugo, A. S., Marpongahtun, Gea, S., Daulay, A., Harahap, M., Siow, J., Goei, R. & Tok, A. I. Y. (2023). Highly fluorescent nitrogen-doped carbon dots derived from jengkol peels (Archindendron pauciflorum) by solvothermal synthesis for sensitive Hg²⁺ ions detection. Biosensors and Bioelectronics: X, 14, 100363-. https://dx.doi.org/10.1016/j.biosx.2023.100363
Journal: Biosensors and Bioelectronics: X 
Abstract: A facile synthesis method involving a one-step solvothermal method is demonstrated in producing fluorescent nitrogen-doped carbon dots (N-CDs) by employing biomass waste (Jengkol peels) and ethylenediamine as a source for carbon and nitrogen. The synthesized N-CDs are spherical nanoparticles with an average size of 4.495 nm, exhibit solubility in water, emit bluish-green fluorescence and a high quantum yield of up to 42%. By using UV–Visible, FTIR, XPS, HR-TEM and Photoluminescence analysis, the as-prepared N-CDs were verified. We demonstrate that nitrogen doping increases fluorescence emission intensity to its radiative recombination of the π − π∗ transitions at C[dbnd]C and n − π∗ at C[dbnd]O or C[dbnd]N. an optimized excitation at 370 nm, the N-CDs exhibited strong PL emission at 522 nm. Under optimized conditions, N-CDs can be used to detect Hg2+ ions based on quenched fluorescence phenomenon. The result reveals excellent selectivity and sensitivity to Hg2+ ions with a detection range of 0.5 μM–4.5 μM. The resulting N-CDs may be used for detecting Hg2+ ions in cosmetics and tap water.
URI: https://hdl.handle.net/10356/171894
ISSN: 2590-1370
DOI: 10.1016/j.biosx.2023.100363
Schools: School of Chemistry, Chemical Engineering and Biotechnology 
School of Materials Science and Engineering 
Rights: © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CCEB Journal Articles

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