Highly Active Carbonaceous Nanofibers: A Versatile Scaffold for Constructing Multifunctional Free-Standing Membranes
Highly Active Carbonaceous Nanofibers: A Versatile Scaffold for Constructing Multifunctional Free-Standing Membranes
复制标题
高活性碳质纳米纤维：构建多功能自支撑膜的多功能支架
DOI：
10.1021/nn202789f
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发表时间：
2011-10-01
期刊：
影响因子：
17.1
通讯作者：
Yu, Shu-Hong
中科院分区：
文献类型：
--
作者：
Liang, Hai-Wei;Zhang, Wen-Jun;Yu, Shu-Hong
将单个纳米级组件的独特特性转化为宏观材料（如膜或片材）仍然是一个挑战，因为这些结构的工程设计往往会损害其固有特性。在这里，我们证明了高活性的碳纳米纤维（CNFs），这是通过模板导向的水热碳化过程中制备的，可以用作一个通用的纳米级支架，用于构建宏观多功能膜。为了证明（NE）支架的广泛适用性，我们通过各种化学路线制备了各种CNF基复合纳米纤维，包括CNFs-Fe 3 O 4、CNFs-TiO 2、CNFs-Ag和CNFs-Au。重要的是，它们都继承了原始CNF支架的独特维度（高纵横比）和机械性能（柔性），因此可以通过简单的铸造工艺组装成宏观的自支撑膜。我们还展示了这些多功能复合膜在磁驱动，抗生物污染过滤，和连续流催化的广泛应用潜力。
Translating the unique characteristics of individual nanoscale components into macroscopic materials such as membranes or sheets still remains a challenge, as the engineering of these structures often compromises their intrinsic properties. Here, we demonstrate that the highly active carbonaceous nanofibers (CNFs), which are prepared through a template-directed hydrothermal carbonization process, can be used as a versatile nanoscale scaffold for constructing macroscopic multifunctional membranes. In order to demonstrate the broad applicability of the (NE scaffold, we fabricate a variety of CNF-based composite nanofibers, including CNFs-Fe3O4, CNFs-TiO2, CNFs-Ag, and CNFs-Au through various chemical routes. Importantly, all of them inherit unique dimensionality (high aspect ratio) and mechanical properties (flexibility) of the original CNF scaffolds and thus can be assembled into macroscopic free-standing membranes through a simple casting process. We also demonstrate the wide application potentials of these multifunctional composite membranes in magnetic actuation, antibiofouling filtration, and continuous-flow catalysis.