Please use this identifier to cite or link to this item:
Title: Nitrogen-doped durian shell derived carbon dots for inner filter effect mediated sensing of tetracycline and fluorescent Ink
Authors: Jayaweera, Supuli
Yin, Ke
Ng, Wun Jern
Keywords: Engineering::Civil engineering
Issue Date: 2019
Source: Jayaweera, S., Yin, K. & Ng, W. J. (2019). Nitrogen-doped durian shell derived carbon dots for inner filter effect mediated sensing of tetracycline and fluorescent Ink. Journal of Fluorescence, 29(1), 221-229.
Journal: Journal of Fluorescence
Abstract: Photoluminescent carbon dots have gained increasing attention in recent years due to their unique optical properties. Herein, a facile one-pot hydrothermal process is used to develop nitrogen-doped carbon dots (NCDs) with durian shell waste as the precursor and Tris base as the doping agent. The synthesized NCDs showed a quantum yield of 12.93% with a blue fluorescence under UV-light irradiation and maximum emission at 414 nm at an excitation wavelength of 340 nm. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy showed the presence of nitrogen and oxygen functional groups on the NCD surface. The particles were quasi-spherical with an average particle diameter of 6.5 nm. The synthesized NCDs were resistant to photobleaching and stable under a wide range of pH but were negatively affected by increasing temperature. NCDs showed high selectivity to Tetracycline as the fluorescence of NCDs was quenched significantly by Tetracycline as a result of the inner filter effect. Based on sensitivity experiments, a linear relationship (R2 = 0.989) was developed over a concentration range of 0-30 μM with a detection limit of 75 nM (S/N = 3). The linear model was validated with two water samples (lake water and tap water) with relative recoveries of 98.6-108.5% and an RSD of <3.5%.
ISSN: 1053-0509
DOI: 10.1007/s10895-018-2331-3
Rights: © 2018 Springer Science+Business Media, LLC, part of Springer Nature. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles
IGS Journal Articles
NEWRI Journal Articles

Citations 10

Updated on Jan 23, 2023

Web of ScienceTM
Citations 10

Updated on Jan 26, 2023

Page view(s)

Updated on Jan 26, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.