Journal ArticleDOI
C3N—A 2D Crystalline, Hole-Free, Tunable-Narrow-Bandgap Semiconductor with Ferromagnetic Properties
Siwei Yang,Wei Li,Wei Li,Cai-Chao Ye,Gang Wang,He Tian,Chong Zhu,Peng He,Guqiao Ding,Xiaoming Xie,Xiaoming Xie,Yang Liu,Yeshayahu Lifshitz,Yeshayahu Lifshitz,Shuit-Tong Lee,Zhenhui Kang,Mianheng Jiang,Mianheng Jiang +17 more
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TLDR
Surprisingly, C3 N exhibits a ferromagnetic order at low temperatures (<96 K) when doped with hydrogen, which opens the door for both fundamental basic research and possible future applications.Abstract:
Graphene has initiated intensive research efforts on 2D crystalline materials due to its extraordinary set of properties and the resulting host of possible applications. Here the authors report on the controllable large-scale synthesis of C3 N, a 2D crystalline, hole-free extension of graphene, its structural characterization, and some of its unique properties. C3 N is fabricated by polymerization of 2,3-diaminophenazine. It consists of a 2D honeycomb lattice with a homogeneous distribution of nitrogen atoms, where both N and C atoms show a D6h -symmetry. C3 N is a semiconductor with an indirect bandgap of 0.39 eV that can be tuned to cover the entire visible range by fabrication of quantum dots with different diameters. Back-gated field-effect transistors made of single-layer C3 N display an on-off current ratio reaching 5.5 × 1010 . Surprisingly, C3 N exhibits a ferromagnetic order at low temperatures (<96 K) when doped with hydrogen. This new member of the graphene family opens the door for both fundamental basic research and possible future applications.read more
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Structures and optoelectronic properties of two-dimensional MC6 (M = Ti and Hf) predicted by computational approaches
TL;DR: In this article, two kinds of two-dimensional metal carbides (2D-MC6, M = Ti and Hf) were theoretically proposed and their electronic, mechanical and optical properties were also computationally investigated.
Journal ArticleDOI
Embedding atomic iron into C<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e182" altimg="si23.svg"><mml:msub><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math>N nanoribbon to activate ferromagnetism
TL;DR: In this paper , an iron atom was embedded in the C3N nanoribbons by substituting the C-C bond or C-N bond to induce ferromagnetism.
Posted ContentDOI
C3N Nanodots Impede Aβ Peptides Aggregation Pathogenic Path in Alzheimer's Disease
TL;DR: In this paper , an ultra-small nanodot called C 3 N was proposed to reduce the global cerebral Aβ peptides levels, particularly in fibrillar amyloid plaques, and restore synaptic loss in AD mice.
Journal ArticleDOI
The regulating effect of twisted angle on the photocatalytic overall water splitting for C3N/C3B heterojunction
Xianghong Niu,Xuemei Zhang,Anqi Shi,Dazhong Sun,Ruilin Guan,Fengfeng Chi,Shasha Li,Bing Wang,Xiuyun Zhang +8 more
TL;DR: In this paper , the authors demonstrate that the suitable twisted angle (θ) formed in the layered structure is an efficient strategy to regulate photocatalytic properties of two-dimensional materials.
Journal ArticleDOI
Effect of vacancy defect and strain on the structural, electronic and magnetic properties of carbon nitride 2D monolayers by DFTB method
TL;DR: In this article , the electronic and magnetic properties of C
References
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Xinchen Wang,Kazuhiko Maeda,Arne Thomas,Kazuhiro Takanabe,Gang Xin,Johan M. Carlsson,Kazunari Domen,Markus Antonietti +7 more
TL;DR: It is shown that an abundant material, polymeric carbon nitride, can produce hydrogen from water under visible-light irradiation in the presence of a sacrificial donor.
Journal ArticleDOI
Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway
Juan Liu,Yang Liu,Naiyun Liu,Yuzhi Han,Xing Zhang,Hui Huang,Yeshayahu Lifshitz,Yeshayahu Lifshitz,Shuit-Tong Lee,Jun Zhong,Zhenhui Kang +10 more
TL;DR: The design and fabrication of a metal-free carbon nanodot–carbon nitride (C3N4) nanocomposite is reported and its impressive performance for photocatalytic solar water splitting is demonstrated.