Journal article
Gas Protection of Two-Dimensional Nanomaterials from High-Energy Impacts
Scientific reports, v 6(1), pp 35532-35532
19 Oct 2016
PMID: 27759051
Abstract
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 MoS
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.
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Details
- Title
- Gas Protection of Two-Dimensional Nanomaterials from High-Energy Impacts
- Creators
- Tan Xing - Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, AustraliaSrikanth Mateti - Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, AustraliaLu Hua Li - Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, AustraliaFengxian Ma - School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4001, AustraliaAijun Du - School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4001, AustraliaYury Gogotsi - A. J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University 3141 Chestnut Street, Philadelphia, PA 19104, USAYing Chen - Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia
- Publication Details
- Scientific reports, v 6(1), pp 35532-35532
- Publisher
- Springer Nature; England
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000386119800002
- Scopus ID
- 2-s2.0-84992058844
- Other Identifier
- 991014877684004721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary