Two-dimensional porous carbon nanosheets from exfoliated nanopaper-like biomass
Two-dimensional porous carbon nanosheets from exfoliated nanopaper-like biomass
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来自剥离的纳米纸状生物质的二维多孔碳纳米片
DOI：
10.1016/j.matlet.2018.08.111
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发表时间：
2018-12-01
影响因子：
3
通讯作者：
Liang, Yeru
中科院分区：
文献类型：
--
作者：
Chen, Lidong;Yang, Shuhao;Liang, Yeru
二维多孔碳纳米片材料越来越重要。它们的合成有很多实例，但它们通常表现出一些共同的要求，如反应条件苛刻，成本高，合成步骤复杂。在这里，我们报道了一种通过使用剥离的纳米纸样生物质制备多孔碳纳米片的简便且具有成本效益的方法，即，白千层树皮为前体。研究发现，经过简单的碳化处理，纳米纸状树皮可以直接转化为具有独特的分级多孔结构的二维碳纳米片。所得炭材料的BET比表面积可达1397 m2/g，无需任何额外的活化过程。通过改变碳化处理条件，可以方便地实现纳米结构的调整。所制备的多孔碳纳米片可作为锂硫电池的硫主体材料。(C)2018爱思唯尔B. V.保留所有权利。
Two-dimensional porous carbon nanosheet materials are of increasing importance. Many examples for their synthesis exist, but they generally show some common requirements, such as rigid reaction conditions, high cost and complicated multiple synthetic steps. Here we report a facile and cost-effective way to prepare porous carbon nanosheets by using an exfoliated nanopaper-like biomass, i.e., melaleuca bark as precursor. It is found that just after a simple carbonization treatment, the nanopaper-like barks can be directly transformed into two-dimensional carbon nanosheets with a unique hierarchical porous structure. A high BET surface area of 1397 m(2)/g can be reached for the obtained carbon materials without any extra activation process. Tuning of nanostructures could be facilely accomplished by varying carbonization treatment conditions. The as-prepared porous carbon nanosheet serves well as the sulfur host materials for lithium-sulfur battery. (C) 2018 Elsevier B.V. All rights reserved.