Three-dimensional sp2-hybridized carbons consisting of orthogonal nanoribbons of graphene and net C

文献信息

发布日期 2015-04-16
DOI 10.1039/C5CP01621E
影响因子 3.676
作者

Meng Hu, Xu Dong, Bingchao Yang, Bo Xu, Dongli Yu, Julong He


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摘要

We identify two sp2 hybridized network models of carbon, namely GT-8 and CT-12, based on first-principles calculation results. Parallel nanoribbon rows of graphene and net C are found to be interlinked with orthogonal nanoribbons to construct GT-8 and CT-12, and their series of isomorphic analogs (named GTs and CTs) are assembled with the widening of the nanoribbon components. GTs and CTs are dynamically and mechanically stable and energetically more favorable than many previous sp2 carbons, including K4, C20, and H6 carbon. They are two-dimensional conductors with insulating properties along the z-axis. Remarkably, GTs are superconductive with increased superconducting transition temperatures, Tc, as the nanoribbons widen. The Tcs of GT-8 and GT-16 are 5.2 and 14.0 K respectively, which are higher than that of boron-doped diamond under the same value of Coulomb pseudopotential μ*. They possess higher bulk moduli than graphite and behave as excellent ductile materials. The Young's modulus of GT-8 along the z-axis is comparable with that of graphene and it significantly increases as the nanoribbons widen.

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来源期刊

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
自引率: 10.3%
年发文量: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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