Innovative electrochemical sensor based on Fe 3 O 4 @Fe-BTC nanocomposite to sensitive determination of 4-nitrophenol

The Fe 3 O 4 @Fe-BTC nanocomposite has been thoroughly investigated in this study. The synthesis of Fe-BTC framework has involved a solvothermal method, while Fe 3 O 4 NPs have been prepared using a coprecipitation technique. The resulting materials have been characterized using various techniques (XRD, FT-IR spectra, and SEM images). The electrochemical behaviors have been analyzed using CV and EIS. More interestingly, the electrochemical performance of 4-nitrophenol (4-NP) has also been investigated on the various modified electrodes via CV, DPV, and CA measurements in a 0.1 M PBS buffer by studying the electrochemical reduction of 4NP. Remarkably, the Fe 3 O 4 @Fe-BTC nanocomposites have exhibited enhanced electrochemical properties when compared with the individual Fe 3 O 4 and Fe-BTC components. This improvement could be attributed to the synergistic effects of the highly porous Fe-BTC and the magnetic Fe 3 O 4 NPs, leading to enhanced electron transfer kinetics and electrocatalytic activity. These findings underscore the potential of designed nanocomposite materials for various electrochemical applications.