Synthesis and characterization of activated carbon supported bimetallic Pd based nanoparticles and their sensor and antibacterial investigation

Activated carbon (AC) supported palladium cobalt bimetallic nanoparticles (PdCo@AC NPs) were obtained by green synthesis method using Cinnamomum verum (C. Verum) extract. The obtained NPs were characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Crystallography (XRD), Transmission Electron Micro-scope (TEM) and Ultraviolet Visible (UV-VIS) spectroscopy, and the functional groups and morphology of the nanoparticle were elucidated. The resulting particle size was found to be 2.467 nm. NPs were evaluated using Cyclic Voltammetry (CV), Scan Rate (SR), and Differential Pulse Voltammetry (DPV) techniques for potential dopamine sensors application. According to the obtained DPV results, Limit of Detection (LOD) and Limit of Quantitation (LOQ) values are found to be 5.68 pM and 17.21 pM, respectively. It was also observed that AC supported PdCo nanoparticles obtained from C. verum extract sensed dopamine quite well. Besides, to examine the antibacterial properties of NPs, antibacterial analyzes were performed with Escherichia coli (E. Coli) and Staphylococcus aureus (S. Aureus). It was observed that it showed good antibacterial properties against gram positive (S. aureus) and gram negative (E. coli) bacteria. The study gave important results in terms of the synthesis of bimetallic NPs using the green synthesis method and their usability in different areas. With this study, it was observed that a good antibacterial dopamine sensor were obtained with the successful biogenic synthesis of AC supported PdCo bimetallic NPs.

Automated summary

Activated carbon supported palladium cobalt bimetallic nanoparticles (PdCo@AC NPs) were synthesized using Cinnamomum verum extract. The nanoparticles were characterized and found to have a particle size of 2.467 nm. Their potential application as dopamine sensors was evaluated, achieving a Limit of Detection (LOD) and a Limit of Quantitation (LOQ) of 5.68 pM and 17.21 pM, respectively. The nanoparticles also exhibited good antibacterial properties against both gram positive (Staphylococcus aureus) and gram negative (Escherichia coli) bacteria. This study demonstrates the successful biogenic synthesis of AC supported PdCo bimetallic NPs and their potential in antibacterial and dopamine sensing applications.