Surface passivation of bare aluminum nanoparticles using perfluoroalkyl carboxylic acids
Surface passivation of bare aluminum nanoparticles using perfluoroalkyl carboxylic acids
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DOI：
10.1021/cm048264y
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发表时间：
2005-05-31
影响因子：
8.6
通讯作者：
Zachariah, MR
中科院分区：
文献类型：
--
作者：
Jouet, RJ;Warren, AD;Zachariah, MR
利用自组装单层膜（SAMs）实现了未钝化铝纳米颗粒的表面钝化。采用Ti((OPr)-Pr-i)(4)在溶液中催化分解H3Al中心点NMe3或H3Al中心点N(Me)Pyr制备纳米级Al颗粒，并用全氟烷基羧酸SAM原位包覆。由于铝颗粒是用湿化学技术制备的，并在溶液中包裹，因此它们没有氧钝化。这种SAM涂层钝化铝，似乎可以防止颗粒在空气中氧化，并使复合材料在一定程度上可溶于极性有机溶剂，如乙醚。表征数据包括扫描电子显微镜、透射电子显微镜、热重分析和衰减全反射-傅里叶变换红外光谱。
Surface passivation of unpassivated Al nanoparticles has been realized using self-assembled monolayers (SAMs). Nanoscale Al particles were prepared in solution by catalytic decomposition of H3Al center dot NMe3 or H3Al center dot N(Me)Pyr by Ti((OPr)-Pr-i)(4) and coated in situ using a perfluoroalkyl carboxylic acid SAM. Because the Al particles are prepared using wet chemistry techniques and coated in solution, they are free of oxygen passivation. This SAM coating passivates the aluminum and appears to prevent the oxidation of the particles in air and renders the composite material, to some extent, soluble in polar organic solvents such as diethyl ether. Characterization data including scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and attenuated total reflectance-Fourier transform infrared spectroscopy of prepared materials are presented.