Study On Water-soluble Palladium Nanoparticles For Electrochemical Sensor

Chapter1:We briefly summarize preparation and application study of nano-materials and the properties and prepared methods of the Pd nanoparticles, especially application study of water-soluble Pd nanoparticles.Chapter2:Palladium nanoparticles (Pd NPs) have been synthesized using DMF as stabilizing ligands. The Pd NPs are soluble and stable in solvents such as water. The as-synthesized Pd NPs were fully characterized by UV-visible spectroscopy and fluorescence spectroscopy. The Pd NPs using DMF as stabilizing ligands were controlled by varying factor.Chapter3:The DMF-Pd NPs modified glassy carbon electrodes were formed. The electrochemical reaction between Cu2+and the DMF-Pd NPs on GC electrode was further studied by cyclic voltammetry. The DMF-Pd NPs produced good response to Cu2+at ambient conditions, Linear relationship was held between the peak current and the concentration of Cu2+in the range from4x10-7mol/L to5x10-4mol/L. the detection limit was5x10-8mol/L. In addition, the reaction between Cu2+and the DMF-Pd NPs was studied by fluorescence spectroscopy.Chapter4:A novel nanocomposite of palladium nanoparticles-modified MWCNT was fabricated by electrodeposition approach on a glassy carbon (GC) electrode at ambient conditions and its electrochemical properties were studied. The Pd NPs modified glassy carbon electrode shows more favorable electron-transfer behavior than that of Pd NPs-MWCNT modified glassy carbon electrodes. Our results have demonstrated that the Pd NPs nanocomposite may be a kind of attractive and promising electrocatalytic nanomaterial for the electrochemical sensing applications.