Graphenization of Diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-04-22 |
| Journal | Chemistry of Materials |
| Authors | Bin Shen, Zhe Ji, Qiang Lin, Peng Gong, Ningning Xuan |
| Institutions | State Key Laboratory of ASIC and System, Shanghai Jiao Tong University |
| Citations | 44 |
Abstract
Section titled āAbstractāDiamond and graphene are the most well-studied allotropes of carbon. Both are superior in mechanical, optical, and electrical properties yet are rarely used together in combined forms. People have reported graphene-diamond heterostructures connected by van der Walls forces. However, a hybrid graphene-diamond heterostructure connected by covalent bonds would be much more robust to tackle demanding challenges such as ultrahard material machining and high-power diamond electronics. Here, we demonstrate a method of direct catalytic graphenization of diamond. Homogeneous graphene-diamond heterostructures, featured with covalent bonded interfaces, were indiscriminately grown on all diamond facets. The synthesized sp2 graphene (0001) sheets seamlessly extend from the diamond (111) sp3 lattice. Such a unique covalent-bond atomic structure gives rise to an unprecedented interfacial bonding strength of ā¼150 GPa, surpassing the intrinsic strength of graphene.