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Photoluminescent Nanocellulosic Film for Selective Hg²⁺ Ion Detection Sun, Jing; Fang, Wenwen; Liza, Afroza Akter; Gao, Rui; Song, Junlong; Guo, Jiaqi; Rojas, Orlando J.

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.

Item Metadata

Title
Photoluminescent Nanocellulosic Film for Selective Hg²⁺ Ion Detection
Creator
Sun, Jing; Fang, Wenwen; Liza, Afroza Akter; Gao, Rui; Song, Junlong; Guo, Jiaqi; Rojas, Orlando J.
Contributor
University of British Columbia. Bioproducts Institute
Publisher
Multidisciplinary Digital Publishing Institute
Date Issued
2024-06-03
Description
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.
Subject
cellulose nanofiber; luminescent nanocomposite; anti-counterfeiting; heavy metal detection
Genre
Article
Type
Text
Language
eng
Date Available
2024-06-14
Provider
Vancouver : University of British Columbia Library
Rights
CC BY 4.0
DOI
10.14288/1.0443970
URI
http://hdl.handle.net/2429/88466
Affiliation
Applied Science, Faculty of; Forestry, Faculty of; Non UBC; Chemical and Biological Engineering, Department of; Chemistry, Department of; Wood Science, Department of
Citation
Polymers 16 (11): 1583 (2024)
Publisher DOI
10.3390/polym16111583
Peer Review Status
Reviewed
Scholarly Level
Faculty; Researcher
Rights URI
https://creativecommons.org/licenses/by/4.0/
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CC BY 4.0