TY - JOUR
T1 - Alginic acid-functionalized silver nanoparticles
T2 - A rapid monitoring tool for detecting the technology-critical element tellurium
AU - Kim, Dae Young
AU - Yang, Tianxi
AU - Srivastava, Priyanka
AU - Nile, Shivraj Hariram
AU - Seth, Chandra Shekhar
AU - Jadhav, Umesh
AU - Syed, Asad
AU - Bahkali, Ali H.
AU - Ghodake, Gajanan Sampatrao
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2024/3/5
Y1 - 2024/3/5
N2 - The increasing global demand for tellurium, driven by its critical role in alloys, photovoltaic devices, and electronics, has raised concerns about its environmental pollution and neurotoxicity. In response, the potential of alginic acid (AA), a renewable, low-cost, and sustainable biopolymer, was explored for the biosynthesis of ultra-small silver nanoparticles (AgNPs) and their application in the detection of tellurium (Te(IV)). The effect of key synthesis parameters on desired physicochemical properties and yield of AgNPs was established to ensure high specificity and sensitivity towards Te(IV). The purified AgNPs with AA surface ligands were utilized to demonstrate a ratiometric absorbance sensor that exhibits excellent linearity and nanomolar-level affinity. This approach achieved a high correlation coefficient of ∼ 0.982, with a low detection limit of about 22 nM. Further investigations into the effect of pH, ionic strength, and organic molecules were conducted to elucidate detection performance and molecular understanding. The detection mechanism relies on the coordination between Te(IV) ions and the carboxylate groups of AA, which initiates aggregation-induced plasmon coupling in adjacent AgNPs. The capability of this analytical method to monitor Te(IV) in real-world water samples features its rapidity, user-friendliness, and suitability for point-of-care monitoring, making it a promising alternative to more complex techniques.
AB - The increasing global demand for tellurium, driven by its critical role in alloys, photovoltaic devices, and electronics, has raised concerns about its environmental pollution and neurotoxicity. In response, the potential of alginic acid (AA), a renewable, low-cost, and sustainable biopolymer, was explored for the biosynthesis of ultra-small silver nanoparticles (AgNPs) and their application in the detection of tellurium (Te(IV)). The effect of key synthesis parameters on desired physicochemical properties and yield of AgNPs was established to ensure high specificity and sensitivity towards Te(IV). The purified AgNPs with AA surface ligands were utilized to demonstrate a ratiometric absorbance sensor that exhibits excellent linearity and nanomolar-level affinity. This approach achieved a high correlation coefficient of ∼ 0.982, with a low detection limit of about 22 nM. Further investigations into the effect of pH, ionic strength, and organic molecules were conducted to elucidate detection performance and molecular understanding. The detection mechanism relies on the coordination between Te(IV) ions and the carboxylate groups of AA, which initiates aggregation-induced plasmon coupling in adjacent AgNPs. The capability of this analytical method to monitor Te(IV) in real-world water samples features its rapidity, user-friendliness, and suitability for point-of-care monitoring, making it a promising alternative to more complex techniques.
KW - Alginic acid
KW - Colorimetric detections
KW - Silver nanoparticle
KW - Technology-critical element
KW - Tellurium ions
UR - http://www.scopus.com/inward/record.url?scp=85179882881&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2023.133161
DO - 10.1016/j.jhazmat.2023.133161
M3 - Article
C2 - 38103291
AN - SCOPUS:85179882881
SN - 0304-3894
VL - 465
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
M1 - 133161
ER -