Synthesis of Copper/Copper oxide Nanoparticles for the Catalytic Reduction of 4-Nitrophenol
Paper ID : 1061-ICNS
Saeid Azizian *, Mahdi Najafi
Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
Metal and metal oxide nanoparticles are very suitable for catalytic activities in organic electron transfer processes. Among these, copper is one of the most important materials that have catalytic activity and the synthesis of copper/copper oxide nanoparticles (Cu/Cu_2 O NPs) is more cost-effective than other noble metals due to their low oxidation resistance. In this study, it has been tried to synthesize a combination of copper nanoparticles with different degree of oxidation by electrochemical method. The efficiency of synthesized material for the catalytic reduction of 4-nitrophenol to 4-aminophenol in the presence of sodium borohydride was studied. The morphology, particle size, crystalline structure of the synthesized catalyst were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD) methods. The kinetics of reaction was followed by Uv-visible spectroscopy and the eefect of different parameters such as initial concentrations of 4-nitrophenol and sodium borohydride on the reaction rate were studied. Finally based on Langmuir-Hinshewood mechanism the rate of reaction was modeled.
copper; copper oxide; nanoparticles; 4-nitrophenol; catalysis.
Status : Abstract Accepted (Poster Presentation)