Tuning the aspect ratio of arrays of silica nanochannels
作者： Nicola Zucchetto , Dominik Brühwiler
DOI: 10.1039/C5RA16913E
关键词:
摘要: Arrays of silica nanochannels (ASNCs) are ordered mesoporous particles with hexagonal prismatic shape. The entrances the well-defined one-dimensional located on base surfaces prisms. aspect ratio micrometer-sized (length-to-diameter ratio) can be tuned in range 0.8 to 2.2 by addition co-ions (K+ and Ca2+) hexadecyltrimethylammonium bromide (CTAB) templated synthesis an adjustment relative amounts precursor (tetraethoxysilane) CTAB. length varied between 2 9 μm. Co-ions thereby not only improve regularity particle shape, but also affect diameter nanochannels, which lies at approximately 2.6 nm (with K+ as co-ion) 3.2 Ca2+ co-ion).
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