The Controlled Synthesis of Carbon Tubes and Rods by Template-Assisted Twin Polymerization
The Controlled Synthesis of Carbon Tubes and Rods by Template-Assisted Twin Polymerization
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DOI：
10.1155/2013/872019
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发表时间：
2013-12
影响因子：
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通讯作者：
F. Böttger‐Hiller;P. Kempe;G. Baumann;M. Hietschold;Philipp Schäfer;D. Zahn;A. Petzold;T. Thurn‐Albrecht;S. Spange
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文献类型：
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作者：
F. Böttger‐Hiller;P. Kempe;G. Baumann;M. Hietschold;Philipp Schäfer;D. Zahn;A. Petzold;T. Thurn‐Albrecht;S. Spange
多孔炭的应用非常广泛。它用于高性能催化剂载体、电池电极材料和气体储存。在这些应用领域中的每一个领域，纳米结构都能改善材料性能。超级电容器存储的能量密度很高。恰如其分的碳结构延长了锂电池的寿命，并通过提高反应速度和选择性来保护催化剂。多孔炭材料大多呈球形。据我们所知，目前还没有系统地合成纳米结构圆柱形多孔碳的方法。通过2，2‘-螺环[4H-1，3，2-苯并二氧杂环己烷]和四呋喃甲氧基硅烷的表面双聚合(TP)，用纳米结构的SiO_2/酚醛树脂和SiO_2/聚(呋喃醇)层对模板玻璃纤维和SiO_2管进行了改性。然后，模板上的SiO_2/聚合物层被热转变为无缺陷的纳米结构SiO_2/碳层。在完全去除SiO_2组分后，最终得到微孔碳管或碳棒。碳棒的直径和碳管的内外径可根据模板的形状和大小进行调整。因此，通过模板辅助TP可以很容易地制备出种类繁多的微孔碳材料。
The application of porous carbon is versatile. It is used for high-performance catalyst support, electrode material in batteries, and gas storage. In each of these application fields nanostructuring improves the material properties. Supercapacitors store a high energy density. Exactly adapted carbon structures increase the life of lithium batteries and protect catalysts with increasing reaction rate and selectivity. Most of porous carbon materials have a spherical shape. To the best of our knowledge, there is no procedure to synthesize nanostructured cylindrical porous carbon systematically. Here, template glass fibres and SiO2-tubes were modified with nanostructured SiO2/phenolic resin and SiO2/poly(furfuryl alcohol) layers by surface twin polymerization (TP) of 2,2′-spirobi[4H-1,3,2-benzodioxasiline] and tetrafurfuryloxysilane. Afterwards the SiO2/polymer layer on the template is thermally transformed into a defect-free nanostructured SiO2/carbon layer. After completely removing the SiO2 components microporous carbon tubes or rods are finally achieved. The diameters of the carbon rods and the inner as well as the outer diameter of the carbon tubes are adjustable according to the shape and size of the template. Thus, a huge variety of microporous carbon materials can be easily produced by template-assisted TP.