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 C1H1.22O0.05 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.%.
Bibliographical noteFunding Information:
The project was supported by Czech Science Foundation (GACR No. 15-09001S) and by specific university research (MSMT No. 20-SVV/2017). M.P. thanks Tier 1 (99/13) from the Ministry of Education, Singapore, for funding. This work was supported by the Advanced Functional Nanorobots project (reg. No. CZ.02.1.01/0.0/0.0/15 003/0000444 financed by the EFRR). This work was created with the financial support of the Neuron Foundation for science support.
All Science Journal Classification (ASJC) codes
- Organic Chemistry