Thulium (III) Hexacyanoferrate Star Fruit-Like Structure Modified Electrode for L-Cysteine Electrochemical Sensor

We report the preparation of star fruit-like thulium hexacyanoferrate (TmHCF) by using one-step electrochemical deposition in cyclic voltammetry technique. The electrochemically deposited star fruit-like TmHCF is exhibit unique electrocatalytic activity towards the detection of L-cysteine (L-Cys). The as-prepared TmHCF was characterized using different techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS). The electrochemical activity of star fruit-like TmHCF was studied using cyclic voltammetry (CV), and differential pulse voltammetry (DPV). The modified electrode shows a considerable linear range, sensitivity and detection limit of about 0.5 to 8.92 mu M, 48.479 mu A mu M-1 cm(-2) and 16 nM respectively. Furthermore, the modified electrode was tested in the real samples analysis in urine and river water samples.