Bouša Daniel, Huber Štěphán, Sedmidubský David, Pumera Martin, Sofer Zdeněk
Department of Inorganic Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague 6, Czech Republic.
Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
Chemistry. 2017 Sep 4;23(49):11961-11968. doi: 10.1002/chem.201702691. Epub 2017 Aug 10.
Graphene hydrogenation gives an opportunity to introduce a band gap into the graphene electronic structure. Complete hydrogenation may lead to the graphane, a fully hydrogenated counterpart of graphene. However, pure graphane has not been successfully prepared to this day. Here, we show that hydrogenation of single-walled carbon nanotubes by means of Birch reduction leads to graphene-based carbon nanostripes with uniform dimensions. Such a material exhibits interesting electrocatalytic and magnetic properties as well huge potential for hydrogen storage since the weight concentration of hydrogen is 8.78 wt.% corresponding to the composition of C H O and thus exceeding the theoretical concentration in pure graphane (7.74 wt.%). The obtained concentration of hydrogen is the highest value ever reported for any graphene-based material and significantly exceeds the ultimate goal of the U.S. Department of Energy for a hydrogen storage material of 7.5 wt.%.
石墨烯氢化提供了一个在石墨烯电子结构中引入带隙的机会。完全氢化可能会生成石墨烷，它是石墨烯的完全氢化对应物。然而，迄今为止尚未成功制备出纯石墨烷。在此，我们表明通过Birch还原法对单壁碳纳米管进行氢化会生成具有均匀尺寸的基于石墨烯的碳纳米条。这种材料展现出有趣的电催化和磁性能以及巨大的储氢潜力，因为氢的重量浓度为8.78 wt.%，对应于C H O的组成，从而超过了纯石墨烷中的理论浓度（7.74 wt.%）。所获得的氢浓度是任何基于石墨烯的材料所报道的最高值，并且显著超过了美国能源部对储氢材料设定的7.5 wt.%的最终目标。
