Abstract
In the present work, Cu-doped nickel ferrite (CuxNi(1−x)Fe2O4) nanoparticles (CuNFNPs) were chemically fabricated by adding citric acid as a capping agent followed by combustion and calcination for acetaldehyde oxidation reaction (AOR) in KOH electrolytes. The as-prepared CuNFNPs were studied in terms of Fourier-transform infrared spectroscopy (FT-IR), Transmission electron microscopy (TEM), Field emission scanning electron microscope (FE-SEM), Energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and Brunauer-Emmett-Teller (BET) specific surface area analyses. The morphology of CuNFNPs has sponges-structure containing irregular pores. Additionally, XRD analysis indicated that the prepared CuNFNPs have a cubic-crystals ferrite without the existence of impurities and the crystal size around 20.2 nm. The electrooxidation of acetaldehyde by the presented CuNFNPs was investigated using cyclic voltammetry (CV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS) in −OH media. Furthermore, the effects of −OH and acetaldehyde on the electrocatalytic performance were studied with and without Cu-doping in addition to EIS and CA studies which confirm the high-performance of CuNFNPs as an electrocatalyst for AOR.
Highlights
Electrocatalytic degradation of aldehydes which have the highest potential among the volatile organic compounds continues to be one of the interesting research points because it can be utilized for different catalytic industrial application areas[1]
The designed copper-nickel ferrite nanoparticles (CuNFNPs) were studied by the use of Fourier-transform infrared spectroscopy (FT-IR), Field emission scanning electron microscope (FE-SEM), Transmission electron microscopy (TEM), HR-TEM, and SAED to investigate the characteristics of morphology and crystallinity
The FE-SEM-Energy-dispersive X-ray spectroscopy (EDX) of the investigated CuNFNPs was shown in Fig. 1C which displays the presence of O, Ni, Cu and Fe peaks without high-intensity peaks related to contaminants
Summary
Electrocatalytic degradation of aldehydes which have the highest potential among the volatile organic compounds continues to be one of the interesting research points because it can be utilized for different catalytic industrial application areas[1]. The obtained CuNFNPs material was studied for physical, chemical and performance investigation as an electrocatalyst for acetaldehyde oxidation.
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