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.
A two-step anodization method was adopted to prepare the porous anode alumina(PAA)template through the oxalic acid solution.By adjusting the parameters(such as current density,oxidation time,electrolyte concentration and other factors),the PAA template was obtained,which has the evenly distributed pores with similar diameters and hexagonal-shaped mouth.Meanwhile,by removing the barrier layer without peeling off the film,the residual aluminum becomes the base and acts as electrode.In the non-aqueous system,the nanowire of RE simple-substance(SS)Nd has been prepared with the template DC electrodeposition.The aperture diameter of PAA template is approximately 60 nm,and there is little change before and after the barrier layer is removed.The Nd nanowire given is orderly and in similar size.EDS shows that the nanowires contain simple-substance(SS)Nd and a tiny of Nd2O3,while the content of SS Nd is 92.73 wt%.Both the SS Nd and Nd2O3 nanowire are possessed of hexagonal structure.
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