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Gas protection of two-dimensional nanomaterials from high-energy impacts

Xing, Tan, Mateti, Srikanth, Li, Lu Hua, Ma, Fengxian, Du, Aijun, Gogotsi, Yury and Chen, Ying 2016, Gas protection of two-dimensional nanomaterials from high-energy impacts, Scientific reports, vol. 6, pp. 1-9, doi: 10.1038/srep35532.

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Title Gas protection of two-dimensional nanomaterials from high-energy impacts
Author(s) Xing, Tan
Mateti, Srikanth
Li, Lu HuaORCID iD for Li, Lu Hua orcid.org/0000-0003-2435-5220
Ma, Fengxian
Du, Aijun
Gogotsi, Yury
Chen, YingORCID iD for Chen, Ying orcid.org/0000-0002-7322-2224
Journal name Scientific reports
Volume number 6
Article ID 35532
Start page 1
End page 9
Total pages 9
Publisher Nature Publishing Group
Place of publication London, Eng.
Publication date 2016
ISSN 2045-2322
Keyword(s) Mechanical and structural properties and devices
Synthesis of graphene
Two-dimensional materials
Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
BORON-NITRIDE NANOSHEETS
AUGMENTED-WAVE METHOD
BASIS-SET
GRAPHENE
CARBON
EXFOLIATION
ATMOSPHERE
NANOTUBES
GRAPHITE
STRENGTH
Summary Two-dimensional (2D) materials can be produced using ball milling with the help of liquid surfactants or solid exfoliation agents, as ball milling of bulk precursor materials usually produces nanosized particles because of high-energy impacts. Post-milling treatment is thus needed to purify the nanosheets. We show here that nanosheets of graphene, BN, and MoS2 can be produced by ball milling of their bulk crystals in the presence of ammonia or a hydrocarbon ethylene gas and the obtained nanosheets remain flat and maintain their single-crystalline structure with low defects density even after a long period of time; post-milling treatment is not needed. This study does not just demonstrate production of nanosheets using ball milling, but reveals surprising indestructible behaviour of 2D nanomaterials in ammonia or hydrocarbon gas under the high-energy impacts; in other milling atmospheres such as air, nitrogen or argon the same milling treatment produces nanosized particles. A systematic study reveals chemisorption of ammonia and hydrocarbon gases and chemical reactions occurring at defect sites, which heal the defects by saturating the dangling bonds. Density functional theory was used to understand the mechanism of mechanochemical reactions. Ball milling in ammonia or hydrocarbon is promising for mass-production of pure nanosheets.
Language eng
DOI 10.1038/srep35532
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2016, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30089033

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.