2 research outputs found
Synthesis of Palladium, ZnFe<sub>2</sub>O<sub>4</sub> Functionalized Reduced Graphene Oxide Nanocomposites as H<sub>2</sub>O<sub>2</sub> Detector
In the present work,
a highly efficient catalyst toward the reduction
of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) was synthesized
on account of reduced graphene oxide (rGO). The rGO were coated with
ZnFe<sub>2</sub>O<sub>4</sub> and Pd nanoparticles (Pd/ZnFe<sub>2</sub>O<sub>4</sub>/rGO), which were used to modify a glassy carbon electrode
to detect H<sub>2</sub>O<sub>2</sub>. The Pd/ZnFe<sub>2</sub>O<sub>4</sub>/rGO nanocomposites were characterized by scanning electron
microscopy, transmission electron microscopy, X-ray powder diffraction,
and X-ray photoelectron spectroscopy. Cyclic voltammetry and amperometry
measurements were used to characterize and optimize the property of
as-prepared H<sub>2</sub>O<sub>2</sub> sensor. The proposed H<sub>2</sub>O<sub>2</sub> sensor displayed a wide linear range from 25
μM to 10.2 mM with an enhanced sensitivity of 621.64 μA
mM<sup>–1</sup> cm<sup>–2</sup>