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在草酸电解液中用二次阳极氧化法制备多孔阳极化氧化铝(PAA)模板。通过对各种工艺参数(如电流密度、氧化时间、电解液浓度等)的调整,最终获得孔洞分布均匀、孔径基本一致、孔口呈六边形的PAA模板。同时在不剥离膜的情况下去除阻挡层,使原残留的铝成为基底,起电极作用。在非水体系中,用模板直流电沉积成功地制备了稀土单质Nd纳米线。经过SEM观测,PAA模板孔径在60nm左右,去阻挡层前后变化不大,制备的Nd纳米线排列有序,尺寸一致;EDS测定表明纳米线为单质Nd及少量Nd2O3纳米线,单质Nd含量为92.73wt%;XRD分析图谱显示所得到的单质Nd及Nd2O3纳米线都为六方结构。
Porous Anodized Alumina (PAA) Template Prepared by Oxygen Oxidation in Oxalic Acid Electrolyte. Through the adjustment of various process parameters (such as current density, oxidation time, electrolyte concentration, etc.), the PAA template with uniform pore distribution, uniform pore diameter and hexagonal aperture was finally obtained. At the same time, the barrier layer is removed without peeling off the film, so that the original remaining aluminum becomes the base and functions as an electrode. In non-aqueous system, rare earth elemental Nd nanowires were successfully prepared by direct current deposition of template. After SEM observation, the pore diameter of PAA template is about 60nm, and there is little change before and after the barrier layer. The prepared Nd nanowires are arranged in order with the same size; the EDS measurement shows that the nanowires are single-element Nd and few Nd2O3 nanowires, the content of elemental Nd is 92.73 wt%; XRD analysis showed that the obtained Nd and Nd2O3 nanowires are hexagonal.