Large interlayer spacing Nb₄C₃T _x (MXene) promotes the ultrasensitive electrochemical detection of Pb²⁺ on glassy carbon electrodes.

ABSTRACT: A Nb₄C₃T _x (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 Nb₄C₃T _x 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 m

SUBMITTER: Rasheed PA 

PROVIDER: S-EPMC9055209 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature