Photoluminescent Nanocellulosic Film for Selective Hg2+ Ion Detection
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2024-06-03
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Language
en
Pages
11
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Polymers, Volume 16, issue 11
Abstract
We developed a highly sensitive solid-state sensor for mercury detection by stabilizing red-sub-nanometric fluorescent gold nanoclusters (AuNC, 0.9 ± 0.1 nm diameter) with bovine serum albumin in a matrix composed of cellulose nanofibrils (CNF) (BSA-AuNC/CNF). The main morphological and optical features of the system were investigated via atomic force/transmission electron microscopy and UV-Vis/fluorescence spectroscopy. The hybrid film (off-white and highly transparent) showed strong photoluminescene under UV irradiation. The latter is assigned to the AuNC, which also increase the ductility of the emitting film, which was demonstrated for high sensitivity Hg2+ detection. When used as a sensor system, following AuNC printing on CNF hybrid films, a limit of detection <10 nM was confirmed. What is more, nanocellulose films have a high pore structure and selective separation properties, showcasing a wide range of potential applications in many fields such as water treatment and oil–water separation.Description
Publisher Copyright: © 2024 by the authors.
Keywords
anti-counterfeiting, cellulose nanofiber, heavy metal detection, luminescent nanocomposite
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Citation
Sun, J, Fang, W, Liza, A A, Gao, R, Song, J, Guo, J & Rojas, O J 2024, ' Photoluminescent Nanocellulosic Film for Selective Hg 2+ Ion Detection ', Polymers, vol. 16, no. 11, 1583 . https://doi.org/10.3390/polym16111583