一步阳极氧化法制备氧化铝纳米线及其形成机理  

Preparation and Formation Mechanism of Alumina Nanowires through a One-Step Anodization Method

作　　者：王西新[1] 赵建玲[1] 白丽云[1] 

机构地区：[1]河北工业大学,天津300130

出　　处：《稀有金属材料与工程》2015年第9期2326-2329,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51272064);河北省杰出青年科学基金(E2013202032);河北省应用基础研究计划重点基础研究项目(12965135D);河北省高层次人才资助项目(2013)

摘　　要：采用一步恒压阳极氧化法在草酸电解液中制备氧化铝纳米线,用扫描电子显微镜和X射线衍射仪等对阳极氧化后产物的形貌、晶相进行了分析,研究了氧化电压、反应温度和电解质浓度对氧化产物形貌的影响。结果表明,纳米线的最佳制备条件为40℃、40 V、0.1 mol/L的草酸电解液。新制备的纳米线为无定形结构,在800℃煅烧60 min后转变为立方相氧化铝。同时根据实验结果,从反应界面的温度分布角度,对氧化铝纳米线的形成机理进行了探讨。Alumina nanowires were prepared through a one-step anodization method in 0.1 mol/L oxalic acid at 40 °C, 40 V. The morphology and crystal structure were analyzed by scanning electron microscope and X-ray diffractometer. Results show that the applied voltages, reaction temperature and concentrations of the electrolytes affect the morphology markedly. The as-prepared nanowires are of amorphous structure and cubic alumina is obtained after annealed at 800 °C for 60 min. Formation mechanism of the nanowires was discussed in detail from the view of temperature distribution.

关 键 词：氧化铝 纳米线 阳极氧化 机理 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ133.1[化学工程—无机化工]