Antimonene-Modified Screen-Printed Carbon Nanofibers Electrode for Enhanced Electroanalytical Response of Metal Ions

A two-dimensional (2D) Sb-modified screen-printed carbon nanofibers electrode (2D Sbexf-SPCNFE) was developed to improve the stripping voltammetric determination of Cd(II) and Pb(II), taking advantage synergistic effect between two nanomaterials. The surface morphology 2D Sbexf-SPCNFE investigated by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Raman spectroscopy. analytical performance compared those presented electrodes modified with Sbexf Sbexf-SPCE) corresponding bare electrodes: (SPCNFEbare) (SPCEbare). After optimizing experimental conditions, exhibited much better parameters other assessed sensors. Analysis in 0.01 mol L−1 HCl (pH = 2) using showed excellent linear behavior concentration range 2.9 85.0 µg 0.3 82.0 for respectively. limits detection after 240 s deposition time Pb(II) were 0.9 0.1 L−1, sensitivities 1.5 3 times higher than displayed SPCEbare, SPCNFEbare, Sbexf-SPCE obtained. Finally, successfully applied traces a certified estuarine water sample.