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[資源]
一篇很有用的合成金屬氧化物納米線和納米孔材料的文獻(xiàn),如Co3O4等.
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作者發(fā)表了一篇利用很簡單的水熱后處理的辦法清除SBA-15 表面微孔的文章,盡管文章的影響因子不高,但是利用該材料作為硬模板,可以有效合成維度可控的金屬氧化物材料,如介孔Co3O4 或Co3O4 納米線等. Title:Tailoring porosity and dimensionality of Co3O4 nanophase using channel interconnectivity control by steaming of nanocasting SBA-15 Abstract:Two-dimensional hexagonal arrays of interconnected Co3O4 nano-rods or disconnected mono-dimensional Co3O4 nano-rods were nano-cast fabricated using SBA-15 as hard template with or without intra-wall microporosity, respectively. A clean, efficient and facile high temperature steam post-treatment is proposed to control the microporosity and the interconnectivity of the nanocasted oxide phase. Characterization by small-angle X-ray diffraction (XRD), nitrogen adsorption, scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) suggests that the selective removal of micropores is resulted from hydrothermal restructuring within the pore wall of calcined SBA-15 followed by a sequential process, including hydrolysis and re-condensation of internal surface siloxane bonds and dissolution–migration–deposition of amorphous debris external onto the SBA-15 under the atmosphere of pure water vapor. -------------------------------------------------------------------------------- Link: http://www.sciencedirect.com/sci ... i/S1387181114004776 |
電化學(xué)電源、電源管理 | 納米材料 | 納米源 | 科研知識 |
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