Development of Palladium on Bismuth Sulfide Nanorods as a Bifunctional Nanomaterial for Efficient Electrochemical Detection and Photoreduction of Hg(II) Ions
Journal
ACS Applied Materials and Interfaces
Journal Volume
14
Journal Issue
4
Pages
5908-5920
Date Issued
2022
Author(s)
Veerakumar P
Jaysiva G
Chen S.-M
KING-CHUEN LIN
Abstract
A nanocomposite containing palladium nanoparticles embedded on bismuth sulfide nanorods (Pd@Bi2S3) was synthesized based on a solvothermal method. The structural features, composition, and morphology were characterized by XRD, FT-IR, FE-SEM-EDS, FE-TEM, HAADF-STEM, XPS, N2 physisorption, and UV-vis. Further electrochemical measurements by EIS, CV, DPV, and LSV techniques were done. It revealed that Pd@Bi2S3/GCE were exploited as electrochemical sensors for the detection of toxic mercuric ions (Hg2+), which provides a wide linear range of 0.049-445 μM, excellent sensitivity of 1.17 μA μM-1 cm-2, and detection limit of 13.5 nM. The modified electrode has also been successfully applied for the detection of Hg2+ in sea fish, river fish, and water samples. The Pd@Bi2S3/GCE signifies a robust, usability, and highly effective method for trace level detection of Hg2+ ions. Furthermore, these Pd@Bi2S3 bifunctional catalysts were discovered to have good photoreduction activity for Hg2+ ions upon the visible-light irradiation. ? 2022 American Chemical Society. All rights reserved.
Subjects
bismuth sulfide
electrochemical detection
mercury
palladium
photoreduction
Chemical detection
Electrochemical sensors
Fish
Ions
Layered semiconductors
Mercury compounds
Nanorods
Palladium compounds
Sulfur compounds
Synthesis (chemical)
Bi-functional
Bismuth sulfide nanorods
ELectrochemical detection
Mercury
Palladium nanoparticles
Photo reduction
Solvothermal method
Structural composition
Structural morphology
Synthesised
Bismuth compounds
Type
journal article