Transforming waste into value: pomelo-peel-based nitrogen-doped carbon dots for the highly selective detection of tetracycline. Issue 12 (8th March 2022)

• Record Type: Journal Article
• Authors: Qi, Haiyan; Huang, Demin; Jing, Jing; Ran, Maoxia; Jing, Tao; Zhao, Ming; Zhang, Chenqi; Sun, Xiaona; Sami, Rokayya; Benajiba, Nada
• Is Part Of: RSC advances. Volume 12:Issue 12(2022)
• Page Start: 7574
• Page End: 7583
• Publication Date: 2022-03-08
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra00134a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : We developed an eco-friendly approach utilizing pomelo peel as a carbon source to synthesize P-NCDs, obtaining a high quantum yield of up to 76.47%. Our prepared P-NCDs can recognize tetracycline, and their fluorescence was quenched based on an IFE. Abstract : Tetracycline (TC) is widely used as a veterinary drug, and its residue in livestock products could enter the human body and cause damage. In this study, we developed an eco-friendly approach that utilized pomelo peel as a carbon source to synthesize new water-soluble N-doped carbon dots (P-NCDs) with blue fluorescence, obtaining a high quantum yield of up to 76.47% and achieving the goal of turning waste into value. Our prepared P-NCDs can selectively recognized TC, and their fluorescence was quenched based on the IFE. P-NCDs could measure the TC concentration in the linear range of 0–100 μmol L −1 with a detection limit (LOD, S/N = 3) as low as 0.045 μmol L −1 . Furthermore, we have successfully applied our P-NCDs to the detection of TC in milk samples with convincing results within 90 s. Overall, our newly synthesized fluorescent sensor, P-NCDs, demonstrated huge potential to become an alternative way to detect TC in a simple, efficient, sensitive way without using any special instruments.