Self-assembly of flowerlike AlOOH boehmite 3D nanoarchitectures.
Self-assembly of flowerlike AlOOH boehmite 3D nanoarchitectures.
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DOI：
10.1021/jp062105f
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发表时间：
2006-07
期刊：
影响因子：
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通讯作者：
Jun Zhang;Sujing Liu;Jing Lin;Haisheng Song;Junjie Luo;E. Elssfah;E. Ammar;Yang Huang;X. Ding-X.
中科院分区：
文献类型：
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作者：
Jun Zhang;Sujing Liu;Jing Lin;Haisheng Song;Junjie Luo;E. Elssfah;E. Ammar;Yang Huang;X. Ding-X.
在这项工作中，提出了一种利用乙醇-水溶液逐步合成一系列花状三维伽马铝薄水铝石纳米结构的水热方法，而不需要使用模板或基质进行自组装。花状薄水铝石纳米结构表现出三个层次的自组织，即单晶纳米棒、纳米条和束，通过扫描和透射电子显微镜对其进行了表征。不同加工时间后得到的产品序列表明存在自组装机制。纳米棒或纳米条表面的氢键可能起着关键作用，通过对产物加热到1000℃后的FTIR光谱分析，得到的产物的比表面积和孔径分布由气体吸附测试表明，薄水铝石纳米结构具有较高的比表面积和孔隙率。
In this work, a hydrothermal route using an ethanol-water solution to progressively synthesize a sequence of flowerlike three-dimensional gamma-AlOOH boehmite nanostructures without employing templates or matrixes for self-assembly is presented. The flowerlike boehmite nanoarchitectures exhibit three hierarchies of self-organization, i.e., single-crystalline nanorods, nanostrips, and bundles, which are characterized by scanning and transmission electron microscopy. The sequence of products obtained after different processing times indicates a self-assembly mechanism. The hydrogen bonding on the surface of nanorods or nanostrips possibly plays a key role, as identified by FTIR spectra of the products after they had been heated to 1000 degrees C. The specific surface area and pore-size distribution of the obtained product as determined by gas-sorption measurements show that the boehmite nanoarchitectures exhibit high BET surface area and porosity properties.