CO Catalytic Oxidation Using Laser-Assisted Gold Nanoparticles Supported on Activated Carbon

Gold nanosparticles (AuNPs) that have been extensively studied over the last decade will supporte activated carbon (AC) for efficient Co catalytic oxidation. To avoid oxidation and well-controlled size and shape distribution (˂10 nm), AuNPs were be synthesized in pure acetone using not more than 4.8 J/cm2 of Fiber laser power density to ablat a gold target surface. The prepared AuNPs were indicated by UV-Vis spectroscopy and Zeta potential measurments. The laser ablation method (LAM) released uniform and homogenous AuNPs with a Gussian curve of UV-Visible absorption peak at 530 nm. Large negative Zeta potential of AuNPs showed a good stability without using any additives/surfactants. In this paper, design and fabrication results of `in-plane' type AuNPs/AC catalyst were characterized by FESEM. According the results, characterized AuNPs with mean diameter of 7±1 nm were successfully supported onto AC. Finally the catalytic activtity of AuNPs/AC catalyst for CO oxidation were studied

کلیدواژه ها:

Gold nanoparticles ، activated carbon ، catalyst ، CO oxidation ، laser ablation method