Thiolated poly(aspartic acid)-functionalized two-dimensional MoS₂, chitosan and bismuth film as a sensor platform for cadmium ion detection.

ABSTRACT: In this work, a sensitive electrochemical platform for determination of cadmium ions (Cd²⁺) is obtained using thiolated poly(aspartic acid) (TPA)-functionalized MoS₂ as a sensor platform by differential pulse anodic stripping voltammetry (DPASV). The performance of the TPA-MoS₂-modified sensor is systemically studied. It demonstrates that the TPA-MoS₂ nanocomposite modified sensor exhibits superior analytical performance for Cd²⁺ over a linear range from 0.5 μg L^-1 to 50 μg L^-1, with a detection limit of 0.17 μg L^-1. Chitosan is able to form a continuous coating film on the surface of the GC electrode. The good sensing performance of the TPA-MoS₂-modified sensor may be attributed to the follo

SUBMITTER: Cao Q 

PROVIDER: S-EPMC9057193 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature