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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Ultralight, compressible and multifunctional carbon aerogels based on natural tubular cellulose
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Ultralight, compressible and multifunctional carbon aerogels based on natural tubular cellulose

机译：基于天然管状纤维素的超轻，可压缩和多功能碳气凝胶

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摘要

Ultralight, compressible and multifunctional carbon aerogels (UCM aerogels) have broad potential applications in various fields including thermal insulation, oil absorption and electronics. However, the preparation of UCM aerogels has been proven to be very challenging. Herein, we report a novel approach for the fabrication of UCM aerogels by pyrolysis of aerogels composed of kapok fibers (KFs), a kind of natural cellulose with a tubular structure. Different from the frequently used freeze-drying approach, the wet KF aerogels can be dried directly in an oven without any shrinkage. The fascinating UCM aerogels feature ultralow density (similar to 1.0 mg cm(-3)), high compressibility, high electrical conductivity (0.1 S cm(-1)), excellent fire-resistance and very high absorption capacity (147-292 g g(-1)) for organic liquids. Furthermore, the UCM aerogels can be easily endowed with various other functions, e.g., magnetic responsivity and superhydrophobicity. The successful creation of the UCM aerogels may provide new insights into the design of UCM aerogels for various applications, as the UCM aerogels can be prepared via a very simple procedure.
机译：超轻，可压缩和多功能的碳气凝胶（UCM气凝胶）在包括隔热，吸油和电子学等各个领域具有广泛的潜在应用。然而，已经证明UCM气凝胶的制备是非常具有挑战性的。本文中，我们报告了一种通过热分解由木棉纤维（KFs）（一种具有管状结构的天然纤维素）组成的气凝胶来制造UCM气凝胶的新方法。与常用的冷冻干燥方法不同，湿式KF气凝胶可以直接在烤箱中干燥而没有收缩。迷人的UCM气凝胶具有超低密度（类似于1.0 mg cm（-3）），高可压缩性，高电导率（0.1 S cm（-1）），出色的耐火性和非常高的吸收能力（147-292 gg（ -1））用于有机液体。此外，UCM气凝胶可以容易地赋予各种其他功能，例如磁响应性和超疏水性。 UCM气凝胶的成功创建可能为各种应用的UCM气凝胶的设计提供新的见解，因为可以通过非常简单的程序来制备UCM气凝胶。

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