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Title: Plasma-enabled healing of graphene nano-platelets layer

Journal Article · · Frontiers of Chemical Science and Engineering
 [1];  [2];  [3];  [2]
  1. George Washington Univ., Washington, DC (United States); Tech-X Corporation
  2. George Washington Univ., Washington, DC (United States)
  3. George Washington Univ., Washington, DC (United States); Tomsk State Univ. of Control Systems and Radioelectronics (Russia)
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Graphene platelet networks (GPNs) were deposited onto silicon substrates by means of anodic arc discharge ignited between two graphite electrodes. Here, substrate temperature and pressure of helium atmosphere were optimized for the production of the carbon nanomaterials. The samples were modified or destroyed with different methods to mimic typical environments responsible of severe surface degradation. The emulated conditions were performed by four surface treatments, namely thermal oxidation, substrate overheating, exposition to glow discharge, and metal coating due to arc plasma. In the next step, the samples were regenerated on the same substrates with identical deposition technique. Damaging and re-growth of GPN samples were systematically characterized by scanning electron microscopy and Raman spectroscopy. Furthermore, the full regeneration of the structural and morphological properties of the samples has proven that this healing method by arc plasma is adequate for restoring the functionality of 2D nanostructures exposed to harsh environments.

Research Organization:
George Washington Univ., Washington, DC (United States); Tech-X Corp., Boulder, CO (United States)
Sponsoring Organization:
Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Grant/Contract Number:
SC0015767
OSTI ID:
1595842
Journal Information:
Frontiers of Chemical Science and Engineering, Journal Name: Frontiers of Chemical Science and Engineering Journal Issue: 2 Vol. 13; ISSN 2095-0179
Country of Publication:
United States
Language:
English

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Cited By (3)

Pulsed anodic arc discharge for the synthesis of carbon nanomaterials journal April 2019
Few-layer flakes of Molybdenum Disulphide produced by anodic arc discharge in pulsed mode journal December 2019
Few-layer flakes of Molybdenum Disulphide produced by anodic arc discharge in pulsed mode preprint January 2020

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Related Subjects

42 ENGINEERING
Anodic arc discharge
Graphene platelet networks
Plasma healing
Raman spectroscopy
Scanning electron microscopy