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Large interlayer spacing Nb4C3Tx (MXene) promotes the ultrasensitive electrochemical detection of Pb2+ on glassy carbon electrodes

journal contribution
submitted on 2024-07-04, 08:44 and posted on 2024-07-04, 13:31 authored by P Abdul Rasheed, Ravi P. Pandey, Tricia Gomez, Michael Naguib, Khaled A. Mahmoud

A Nb4C3Tx (MXene)-modified glassy carbon electrode was used for the electrochemical detection of Pb2+ ions in aqueous media. The sensing platform was evaluated by anodic stripping analysis after optimizing the influencing factors such as pH, deposition potential, and time. The large interlayer spacing, high c lattice parameter and higher conductivity of Nb4C3Tx compared to other MXenes enhance the electrochemical detection of Pb2+. The developed sensor can reach a detection limit of 12 nM at a potential ∼−0.6 V. Additionally, the developed sensor showed promising selectivity in the presence of Cu2+ and Cd2+, and stability for at least 5 cycles of continuous measurements with good repeatability. This work demonstrates the potential applications of Nb4C3Tx towards the development of effective electrochemical sensors.

Other Information

Published in: RSC Advances
License: http://creativecommons.org/licenses/by/3.0/
See article on publisher's website: http://dx.doi.org/10.1039/d0ra04377j

Funding

Qatar National Research Fund (NPRP8-286-2-118), “Green” Antimicrobial Nanoparticles for Seawater Disinfection.

Qatar National Research Fund (NPRP9-254-2-120), Two-Dimensional Metal Carbides (MXenes) for Next Generation Water Treatment Membranes.

History

Language

  • English

Publisher

Royal Society of Chemistry

Publication Year

  • 2020

License statement

This Item is licensed under the Creative Commons Attribution 3.0 International License.

Institution affiliated with

  • Hamad Bin Khalifa University
  • Qatar Environment and Energy Research Institute - HBKU

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    Qatar Environment and Energy Research Institute - HBKU

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