TY - JOUR
T1 - Photoluminescent Nanocellulosic Film for Selective Hg2+ Ion Detection
AU - Sun, Jing
AU - Fang, Wenwen
AU - Liza, Afroza Akter
AU - Gao, Rui
AU - Song, Junlong
AU - Guo, Jiaqi
AU - Rojas, Orlando J.
N1 - Publisher Copyright:
© 2024 by the authors.
PY - 2024/6/3
Y1 - 2024/6/3
N2 - 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.
AB - 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.
KW - anti-counterfeiting
KW - cellulose nanofiber
KW - heavy metal detection
KW - luminescent nanocomposite
UR - http://www.scopus.com/inward/record.url?scp=85195780568&partnerID=8YFLogxK
U2 - 10.3390/polym16111583
DO - 10.3390/polym16111583
M3 - Article
AN - SCOPUS:85195780568
SN - 2073-4360
VL - 16
JO - Polymers
JF - Polymers
IS - 11
M1 - 1583
ER -
