Preparation, Characterization Nanoparticles Silver Oxide by Electrochemical Method in Different Electrolytic Media and Using as Catalysts

摘要

Ag _( 2 ) O was prepared using a simple chemical technique, a low-cost, easy to use electrodeposition method capable of controlling the size and shape of prepared nanoparticles compared to other methods and using surfactants such as (Glycerin (GLY), Polyvinyl Alcohol (PVA), Poly (N-vinylpyrrolidone) (PVP)) that help the growth and nucleation of suspended particles. The silver oxide is measured by using several techniques such as (Atomic Force Microscopy (AFM), X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Energy-Dispersive X-ray Spectroscopy (EDS) and High Resolution Transmission Electron Microscope (HRTEM). The powder obtained is about 40 nm in order to demonstrate the capacity of the silver oxide as a catalyst calcination at 300°C and standard silver oxide from the Swiss-Fluka company, result indicated an efficiency of up to 91.34, 89.68 PDE% photo degradation energy for silver oxide standard and prepared respectively, parameters influence such as: Energy activation (Ea), Enthalpy of activation (ΔH ~( 0 ) ), entropy of activation (ΔS ~( 0 ) ) and free energy of activation (ΔG ~( 0 ) ) and pH of dye sol and temperature were detailed study. The product photocatalytic reactions suggested that of model are first order pseudo-reactions given by Langmuir-Hinshelwood, the activation energy is equal to 6.950 and 5.804 kJ/mol ~( -1 ) silver oxide standard and prepared, respectively.