Abstract
In this work, based on a Fe3O4/multiwalled carbon nanotube/laser scribed graphene composites functionalized with chitosan modified glassy carbon electrode (Fe3O4/MWCNTs/LSG/CS/GCE), a highly active, sensitive, facile and low-cost electrochemical sensor was fabricated to determine cadmium (Cd2+) and lead (Pb2+) simultaneously using square wave anodic stripping voltammetry (SWASV). This novel nanocomposite possessed a significantly large specific area, remarkably high conductivity and excellent absorption ability. By in situ plating bismuth film, this constructed sensor proved favorable electrochemical response with a wide linear range from 1 to 200 μg L−1, and an ultralow detection limit of 0.1 and 0.07 μg L−1 for Cd2+ and Pb2+ (S/N = 3), respectively. Furthermore, excellent repeatability, reproducibility, stability, and reliable practical applicability were achieved in the constructed sensor. Finally, the prepared sensor is believed to provide promising applications in the electrochemical determination of heavy metal ions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.