摘要
在水溶液体系中,利用十六烷基三甲基溴化铵(CTAB)作为模板剂,水热合成了由纳米薄片自组装成的三维花状薄水铝石。采用XRD,SEM和TEM对其物相结构和形貌进行了分析,研究了反应温度和反应时间对产物形貌的影响。研究结果表明:在反应温度为160℃和反应时间为24h时,得到形貌规则统一、分散均匀的花状薄水铝石。该花状结构是由厚50nm的纳米薄片自组装而成,直径550～800nm,在其形成过程中,模板剂CTAB起到关键作用,并推断了纳米薄片自组装花状结构的形成机理。
Three-dimensional flowerlike boehmite（AlOOH）self-assembled by nano-flakes were synthesized using cationic surfactant,hexadecyl trimethyl ammonium bromide （CTAB） as structure-directing template via hydrothermal method.Crystal structures and morphologies of the boehmite were characterized by XRD,SEM,and TEM.Effects of reaction temperatures and times on morphologies were also investigated.Research results showed that flowerlike AlOOH with good dispersibility and uniform morphology was obtained at 160 ℃ for 24 h.Diameter of flowerlike AlOOH,whose architecture was self-assembled by nano-flakes with thickness of 50 nm,was 550～800 nm.It was found that the template agent CTAB played a key role for the growth of flowerlike AlOOH architecture.Growth mechanism of the flowerlike architecture self-assembled by nano-flakes was also discussed based on experimental results.
出处
《无机盐工业》
CAS
北大核心
2010年第4期11-13,共3页
Inorganic Chemicals Industry
基金
国家自然科学基金(50974026)
辽宁省教育厅计划(2008S035)
大连市科技计划项目(2008A13GX229)
