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Abstract
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Cerium oxide nanoparticles (CeO2) are widely used as the electrocatalyst
in solar cells, fuel cells, water splitting, and electroanalytical
experiments. Therefore, controlled electrodeposition of CeO2 on the
surface of electrodes may improve the performance of electrochemical
devices. CeO2 was electrochemically deposited on the surface of
a graphenized carbon ceramic electrode (GCCE) for the determination
of isoprenaline in biological samples. The pH, temperature,
deposition time, and applied potential were optimized for the electrodeposition.
According to differential pulse voltammetry, the linear
range, detection limit, and sensitivity of the designed assay were
from 5 to 310 nM, 3.03 nM and 25.21105mA mM1cm2, respectively.
Easy preparation, low cost, and high production repeatability
of the developed CeO2/GCCE suggest further applications. The prepared
modified electrode was successfully utilized for the determination
of isoprenaline in human serum with satisfactory results.
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