Carbon dots-based nanomaterials for fluorescent sensing of toxic elements in environmental samples: Strategies for enhanced performance.

Autor: González-González RB; Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico., Morales-Murillo MB; Tecnológico Nacional de México - Instituto Tecnológico de Durango, Chemical & Biochemical Engineering Department, Blvd. Felipe Pescador 1830 Ote., Durango, Dgo., 34080, Mexico., Martínez-Prado MA; Tecnológico Nacional de México - Instituto Tecnológico de Durango, Chemical & Biochemical Engineering Department, Blvd. Felipe Pescador 1830 Ote., Durango, Dgo., 34080, Mexico., Melchor-Martínez EM; Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico., Ahmed I; School of Medical Science, Menzies Health Institute Queensland, Griffith University (Gold Coast campus), Parklands Drive, Southport, QLD, 4222, Australia., Bilal M; School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China., Parra-Saldívar R; Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico. Electronic address: r.parra@tec.mx., Iqbal HMN; Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico. Electronic address: hafiz.iqbal@tec.mx.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2022 Aug; Vol. 300, pp. 134515. Date of Electronic Publication: 2022 Apr 06.
DOI: 10.1016/j.chemosphere.2022.134515
Abstrakt: Rapid industrialization and manufacturing expansion have caused heavy metal pollution, which is a critical environmental issue faced by global population. In addition, the disadvantages presented by conventional detection methods such as the requirement of sophisticated instruments and qualified personnel have led to the development of novel nanosensors. Recently, carbon dots (CDs) have been presented as a multifunctional nanomaterial alternative for the accurate detection of heavy metal ions in water systems. The capacity of CDs to detect contaminants in wastewater -including heavy metals- can be found in the literature; however, to the best of our knowledge, none of them discusses the most recent strategies to enhance their performance. Therefore, in this review, beyond presenting successful examples of the use of CDs for the detection of metal ions, we further discuss the strategies to enhance their photoluminescence properties and their performance for environmental monitoring. In this manner, strategies such as heteroatom-doping and surface passivation are reviewed in detail, as well as describing the mechanisms and the effect of precursors and synthesis methods. Finally, the current challenges are described in detail to propose some recommendations for further research.
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Databáze: MEDLINE
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