L-Cysteine-assisted synthesis of polypyrrole-coated copper nanobelts and their application in the detection of hydrazine

Abstract

This study examines the synthesis and characterization of polypyrrole-coated copper nanobelts (PPy-Cu nanobelts). The PPy-Cu nanobelts were synthesized via a direct reduction of Cu (II) in the presence of l-cysteine as the reducing agent. The detection of hydrazine (Hz) was investigated using a synthesized nanocomposite. The electrode's ability to identify Hz was confirmed using electrochemical impedance spectroscopy (EIS), cyclic voltammetry, and differential pulse voltammetry. Capacitance and “n” factors related to roughness increased from bare GCE to PPy-Cu nanobelts/GCE, indicating that the available surface area of the modified electrode with PPy-Cu nanobelts increased, resulting in an increase in the electrode's interaction with Hz. The voltammetric response was linear between 1 and 500 nM Hz concentration range, with a detection limit (at S/N = 3) of 0.079 nM.