Abstract
Abstract A new strategy for the electrochemical sensing of hydrazine based on Ni-Fe layered double hydroxide nanosheets modified screen-printed carbon electrode (Ni-Fe LDH NSs/SPCE) was studied. The techniques such as differential pulse voltammetry (DPV), cyclic voltammetry (CV), and chronoamperometry were utilized to evaluate the application of Ni-Fe LDH NSs modified SPCE for hydrazine determination. The results from CV exhibit that Ni-Fe LDH NSs/SPCE can significantly increase the oxidation peak current of hydrazine and also reduce the required over-potential. The quantitative determination of hydrazine was performed by DPV technique. This sensor showed a linear response to hydrazine in the concentration range of 0.05 to 670.0 µM. The limit of detection for hydrazine based on the modified SPCE was 0.02 µM. Furthermore, the Ni-Fe LDH NSs/SPCE platform presented satisfactory recoveries and reliabilities in river and well water samples, indicating the application potential of this developed electrochemical sensor for hydrazine determination in water samples.
Accepted Version
Published Version
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