Characterization of edge structure and misorientation between layers of microwave plasma synthesized few-layer graphene nanosheets

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00119105" target="_blank" >RIV/00216224:14310/21:00119105 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.37904/nanocon.2020.3766" target="_blank" >https://doi.org/10.37904/nanocon.2020.3766</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/nanocon.2020.3766" target="_blank" >10.37904/nanocon.2020.3766</a>

Result language

angličtina

Original language name

Characterization of edge structure and misorientation between layers of microwave plasma synthesized few-layer graphene nanosheets

Original language description

Topological and edge defects and misalignment of graphene layers in few-layer graphene strongly influence its chemical reactivity and thermal stability. Scanning and transmission electron microscopy and image analysis was used to determine alignment, degree of rotation, between layers in few-layer graphene prepared by decomposition of ethanol in microwave plasma torch at atmospheric pressure. The prepared nanosheets consisted of 1 to 20 layers, with interlayer distance of 0.34 nm, and the main structure was formed by successive growth of individual layers on top of each other. Using FFT, the edges and wrinkles were separated from the graphene layers themselves. The layers were spread out on each one separately and the angles of rotation between them were measured. The rotation angle between layer was from 20 to 30 degrees and the high quality graphene nanosheets, Raman bands 2D/G ratio of 1.6 and D/G ratio of 0.5, exhibited predominantly closed edges and opened edges were mostly found in the layers forming islands on the main structure. Graphene nanosheets remain fully stable in vacuum up to 1000 °C and thermogravimetric analysis showed complete burnout of the sample in synthetic air at 770 °C with more defective sample exhibiting higher weight loss between 400 and 700 °C.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

NANOCON 2020: 12th International Conference on Nanomaterials - Research & Application

ISBN

9788087294987

ISSN

2694-930X

e-ISSN

—

Number of pages

6

Pages from-to

529-534

Publisher name

TANGER Ltd.

Place of publication

Ostrava

Event location

Brno

Event date

Oct 21, 2020

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000664505500090