摘要
在乙醇—水溶液体系中,在无模板剂的情况下,水热合成由纳米棒自组装成的独特海胆状薄水铝石(AlOOH)超结构。采用XRD、SEM、TEM和SAED对其物相结构和形貌进行了分析,讨论了铝盐前驱体、醇水比例和反应温度对产物形貌的影响。研究结果表明:当铝盐前驱体为AlCl3·6H2O,醇水体积比为1∶2,反应温度为200℃时,得到形貌规则、分散均匀的三维海胆状薄水铝石超结构,该海胆状超结构是由直径60～80nm的纳米棒自组装而成,海胆球直径为6～10μm,选区电子衍射表明该海胆状薄水铝石的多晶本质。
Novel urchin-like boehmite （AlOOH） superstructures consisting of nanorods were successfully synthesized by a template-free hydrothermal synthetic route in an ethanol-water solution. The crystal structures and the morphologies of boehmites were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM） and selected area electron diffraction （SAED）. The effects of the precursors, the volume ratio of EtOH/H2O and reaction temperatures on the morphologies were also discussed. It was shown that the 3D urchin-like boehmite of uniform morphology and good dispersibility was prepared with the volume ratio （EtOH/H2O） of 1：2 using AlCl3·6H2O as the precursor at 200 ℃. The diameter of the urchin-like boehmite, which consisted of nanorods with the diameter of 60-80 nm, was 6-10 μm. The SAED pattern revealed the polycrystalline nature of the urchin-like boehmite.
出处
《传感技术学报》
CAS
CSCD
北大核心
2010年第7期909-912,共4页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金面上项目资助(50974026)
关键词
无机非金属材料
超结构
水热合成
薄水铝石
海胆状
inorganic non-metallic materials
superstructure
hydrothermal synthesis
boehmite
urchin-like
作者简介
徐冰（1980-），男，辽宁大连人，博士研究生，主要研究方向为纳米材料的制备，xubing@djtu．edu．cn；
王晶（1967-），女，辽宁大连人，博士，教授，博士生导师，辽宁省优秀青年教师。主要从事无机非金属材料方面的教学科研工作。承担多项国家基金及省市等重点课题及各类横向课题。发表学术论文30余篇，wangjing@ditu．edu．cn。
