Synthesis And Characterization Of One Dimension Inorganic Nanostructured Materials Using Porous Alumina Membrance

During the past decades, one-dimensional nanostructured materials have attracted considerable attention because of their unique electronic properties, optical properties, magnetic properties and catalytic activities.In this paper, several one-dimensional nanostructured materials (Fe nanowires, Co nanowires, Ni nanowires, Fe_xCo_1-xnanowires, Cu nanowires, Ag nanowires and carbon nanotubes) have been prepared and their physics properties and growth mechanism have also been studied. The main results and conclusions can be summarized as following:Highly ordered porous alumina membrances (PAMs) were prepared by a two-step anodization method. The mechanism of growth, high-temperature properties, and the photoluminescence (PL) properties of the PAM were measured. Fe nanowires, Co nanowires, Ni nanowires, Fe_xCo_1-x nanowires were prepared by alternating current (AC) electrodeposition into PAMs and the magnetic properties were studied by Vibrating Sample Magnetometer (VSM). The results indicate strong magnetic anisotropy for the nanowire arrays. Cu nanowires and Cu₂O nanowires were fabricated by adjusting pH of the electrolyte in the PAM. Cu nanowires were fabricated when pH≤3, Cu and Cu₂O composite structured nanowires were pepared when pH=4, and Cu₂O nanowires were pepared when pH=5. Ag nanowires metastable 4H crystal structure inside PAM were prepared using AC electrodeposition method due to the size effect. Carbon nanotubes were fabricated into the PAMs by chemical vapor deposition (CVD) method. Au nanoparticles were loaded into the PAMs using a two polymer electrolyte modification method, which could be used for the research of the catalysis mechanism in nano-channels.