Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, University of Science and Technology of China, Hefei, 230026, China.
Small. 2017 Jul;13(25). doi: 10.1002/smll.201700453. Epub 2017 May 16.
Nanostructured carbon aerogels with outstanding physicochemical properties have exhibited great application potentials in widespread fields and therefore attracted extensive attentions recently. It is still a challenge so far to develop flexible and economical routes to fabricate high-performance nanocarbon aerogels, preferably based on renewable resources. Here, ultralight and multifunctional reduced graphene oxide/carbon nanofiber (RGO/CNF) aerogels are fabricated from graphene oxide and low-cost, industrially produced bacterial cellulose by a three-step process of freeze-casting, freeze-drying, and pyrolysis. The prepared RGO/CNF aerogel possesses a very low apparent density in the range of 0.7-10.2 mg cm and a high porosity up to 99%, as well as a mechanically robust and electrically conductive 3D network structure, which makes it to be an excellent candidate as absorber for oil clean-up and an ideal platform for constructing flexible and stretchable conductors.
具有优异物理化学性能的纳米结构碳气凝胶在广泛的领域表现出了巨大的应用潜力，因此最近引起了广泛关注。迄今为止，开发基于可再生资源的具有成本效益的制备高性能纳米碳气凝胶的灵活路线仍然是一个挑战。在这里，通过冷冻铸造、冷冻干燥和热解的三步法，由氧化石墨烯和低成本、工业生产的细菌纤维素制备了超轻和多功能还原氧化石墨烯/碳纳米纤维（RGO/CNF）气凝胶。所制备的 RGO/CNF 气凝胶的表观密度在 0.7-10.2mg cm 范围内非常低，孔隙率高达 99%，同时具有机械坚固和导电的 3D 网络结构，使其成为用于清除油污的优秀吸附剂和用于构建柔性可拉伸导体的理想平台。
