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用于水处理的三维碳纳米管网络。

A three-dimensional carbon nanotube network for water treatment.

机构信息

Dipartimento di Fisica, Università di Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Rome, Italy.

出版信息

Nanotechnology. 2014 Feb 14;25(6):065701. doi: 10.1088/0957-4484/25/6/065701. Epub 2014 Jan 16.

Abstract

The bulk synthesis of freestanding carbon nanotube (CNT) frameworks is developed through a sulfur-addition strategy during an ambient-pressure chemical vapour deposition process, with ferrocene used as the catalyst precursor. This approach enhances the CNTs' length and contorted morphology, which are the key features leading to the formation of the synthesized porous networks. We demonstrate that such a three-dimensional structure selectively uptakes from water a mass of toxic organic solvent (i.e. o-dichlorobenzene) about 3.5 times higher than that absorbed by individual CNTs. In addition, owing to the presence of highly defective nanostructures constituting them, our samples exhibit an oil-absorption capacity higher than that reported in the literature for similar CNT sponges.

摘要

通过在常压化学气相沉积过程中添加硫的策略,开发了独立式碳纳米管 (CNT) 框架的批量合成,其中使用二茂铁作为催化剂前体。这种方法增强了 CNT 的长度和扭曲形态,这是导致合成多孔网络形成的关键特征。我们证明,这种三维结构从水中选择性地吸收了大约 3.5 倍于单个 CNT 吸收的有毒有机溶剂(即邻二氯苯)的质量。此外,由于构成它们的高度有缺陷的纳米结构的存在,我们的样品表现出的吸油能力高于文献中报道的类似 CNT 海绵的吸油能力。

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