Synthesis of biomorphic Al2O3 based on natural plant templates and assembly of Ag nanoparticles controlled within the nanopores

Synthesis of biomorphic Al2O3 based on natural plant templates and assembly of Ag nanoparticles controlled within the nanopores
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基于天然植物模板的生物形态 Al2O3 的合成以及纳米孔内控制的银纳米颗粒的组装

DOI:
10.1016/j.micromeso.2007.03.050
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发表时间:
2008-02
影响因子:
5.2
通讯作者:
Li, Xufan
Li, Xufan
中科院分区:
材料科学2区
文献类型:
--
作者:
Guo, Qixin;Fan, Tongxiang;Ding, Jian;Zhang, Di;Li, Xufan

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分别以木炭和棉花为模板合成了生物形态的Al 2 O3,并将银纳米粒子组装到生物形态的Al 2 O3纳米孔中。采用场发射扫描电镜(FESEM)、透射电镜(TEM)、X射线衍射(XRD)、氮气吸附和紫外可见光谱(UV-vis)等手段对生物形态Al 2 O3的形貌、孔结构以及包埋纳米银颗粒的尺寸和性能进行了表征。两种不同模板制备的生物形态Al 2 O3的纳米孔结构存在差异,在同一模板中,不同的合成条件对纳米孔结构也有影响。进一步组装的Ag纳米粒子的尺寸和分布与生物形态Al 2 O3的纳米孔的尺寸和分布一致,并且Ag纳米粒子的尺寸和与生物形态Al 2 O3基体的相互作用影响其表面等离子体共振(SPR)效应的强度和位置。
Biomorphic Al2O3templated with charcoal and cotton is synthesized respectively and Ag nanopaticles are further assembled in the nanopores of biomorphic Al2O3. The morphology and pore structure of biomorphic Al2O3as well as the size and properties of embedded Ag nanoparticles are characterized by FESEM, TEM, XRD, nitrogen adsorption and UV–vis. Biomorphic Al2O3with two different templates show differences in the nanopore structure, and within the same template, the nanopore structure is also influenced by different synthesizing conditions. The size and distribution of further assembled Ag nanoparticles are in accordance with that of the nanopores of biomorphic Al2O3, and the intensity and position of surface plasma resonance (SPR) effect of Ag nanoparticles are influenced by their size and interaction with biomorphic Al2O3matrixes.
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