Tapia, María A.Pérez Ràfols, ClaraPastika, JanGusmão, Rui Jorge CoelhoSerrano i Plana, NúriaSofer, ZdenekDíaz Cruz, José Manuel2022-10-032022-10-032022-06-070013-4686https://hdl.handle.net/2445/189556Exfoliated β-Sb or two dimensional (2D) antimonene-based modified screen-printed electrode (2D Sb-SPCE), prepared by drop-casting of an exfoliated layered β-antimony (2D Sb) suspension, was used for the simultaneous determination of Pb(II) and Cd(II) by differential pulse anodic stripping voltammetry (DPASV). 2D Sb-SPCE was characterized by microscopic and analytical techniques, and compared not only to bare SPCE but also to layered antimony chalcogenides based-sensors. Both Sb2S3 and Sb2Se3 have an isomorphous tubular one-dimensional (1D) crystal structure, whereas Sb2Te3 and monoelement β-Sb have a 2D layered structure. Under optimized conditions, 2D Sb-SPCE displays an excellent analytical performance with detection limits of 0.3 and 2.7 μg L−1 for Pb(II) and Cd(II), respectively, and a linear response from 1.1 to 128.3 µg L−1 for Pb(II) and from 9.1 to 132.7 µg L−1 for Cd(II). Moreover, 2D Sb-SPCE was successfully applied for the DPASV determination of Pb(II) and Cd(II) in tap water, achieving statistically comparable results to those provided by ICP-MS measurements.application/pdfengcc-by-nc-nd (c) Tapia, María A. et al., 2022https://creativecommons.org/licenses/by-nc-nd/4.0/VoltametriaAntimoniIons metàl·licsVoltammetryAntimonyMetal ionsinfo:eu-repo/semantics/article7238332022-10-03info:eu-repo/semantics/openAccess