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The Role of N and S Doping on Photoluminescent Characteristics of Carbon Dots from Palm Bunches for Fluorimetric Sensing of Fe3+ Ion
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Document Title
The Role of N and S Doping on Photoluminescent Characteristics of Carbon Dots from Palm Bunches for Fluorimetric Sensing of Fe3+ Ion
Author
Saengsrichan A, Saikate C, Silasana P, Khemthong P, Wanmolee W, Phanthasri J, Youngjan S, Posoknistakul P, Ratchahat S, Laosiripojana N, Wu KCW, Sakdaronnarong C
Name from Authors Collection
Scopus Author ID
57754798200
Affiliations
Mahidol University; National Science & Technology Development Agency - Thailand; National Nanotechnology Center (NANOTEC); King Mongkuts University of Technology Thonburi; National Taiwan University; National Taiwan University
Type
Article
Source Title
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Year
2022
Volume
23
Issue
9
Open Access
Green Published, gold
Publisher
MDPI
DOI
10.3390/ijms23095001
Format
Abstract
This work aims to enhance the value of palm empty fruit bunches (EFBs), an abundant residue from the palm oil industry, as a precursor for the synthesis of luminescent carbon dots (CDs). The mechanism of fIuorimetric sensing using carbon dots for either enhancing or quenching photoluminescence properties when binding with analytes is useful for the detection of ultra-low amounts of analytes. This study revealed that EFB-derived CDs via hydrothermal synthesis exceptionally exhibited luminescence properties. In addition, surface modification for specific binding to a target molecule substantially augmented their PL characteristics. Among the different nitrogen and sulfur (N and S) doping agents used, including urea (U), sulfate (S), p-phenylenediamine (P), and sodium thiosulfate (TS), the results showed that PTS-CDs from the co-doping of p-phenylenediamine and sodium thiosulfate exhibited the highest PL properties. From this study on the fluorimetric sensing of several metal ions, PTS-CDs could effectively detect Fe3+ with the highest selectivity by fluorescence quenching to 79.1% at a limit of detection (LOD) of 0.1 mu mol L-1. The PL quenching of PTS-CDs was linearly correlated with the wide range of Fe3+ concentration, ranging from 5 to 400 mu mol L-1 (R-2 = 0.9933).
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
Thailand Research Fund [RSA6280074, RTA6280003]; Mahidol University; National Science and Technology Development Agency (NSTDA), Thailand
License
CC BY
Rights
Authors
Publication Source
WOS