Document Detail


Preparation of graphene by using an intense cavitation field in a pressurized ultrasonic reactor.
MedLine Citation:
PMID:  23015465     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
A new and efficient method to produce a large quantity of high-quality and non-oxidized graphene flakes from powdered natural graphite by using a high-intensity cavitation field in a pressurized ultrasonic reactor is demonstrated. TEM and selected-area electron diffraction (SAED) confirmed the ordered graphite crystal structure of graphene. Atomic force microscopy (AFM) was used to examine the thickness of the graphene sheets. The delamination (exfoliation) of natural graphite in the liquid phase depends on the physical effects of ultrasound, which break down the 3D graphite structure into a 2D graphene structure. The prepared graphene is of high purity and without defects because no strongly oxidizing chemicals are used and no toxic products result. TEM shows that graphene nanosheets were produced with sizes in the range of tens to hundreds of square nanometers; these nanosheets were smooth and without any ripples and corrugations. High-resolution TEM (HRTEM) and SAED analysis confirmed that the products were graphene nanosheets.
Authors:
Václav Stengl
Related Documents :
24628625 - Direct observation of metal-insulator transition in single-crystalline germanium tellur...
23368435 - Controlled dephasing of an electron interferometer with a path detector at equilibrium.
23848795 - Partial ionization in dense plasmas: comparisons among average-atom density functional ...
23485275 - Spin filtering in molecular junction: magnetoresistance evaluation from wave-function c...
17029375 - Infrared spectra of the m(no)n (m = sn, pb; n = 1, 2) and pbno- molecules.
17995305 - Theory of rf-spectroscopy of strongly interacting fermions.
Publication Detail:
Type:  Journal Article     Date:  2012-09-27
Journal Detail:
Title:  Chemistry (Weinheim an der Bergstrasse, Germany)     Volume:  18     ISSN:  1521-3765     ISO Abbreviation:  Chemistry     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-22     Completed Date:  2013-03-14     Revised Date:  2013-06-10    
Medline Journal Info:
Nlm Unique ID:  9513783     Medline TA:  Chemistry     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  14047-54     Citation Subset:  -    
Copyright Information:
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Affiliation:
Department of Solid State Chemistry, Institute of Inorganic Chemistry AS CR v.v.i., Czech Republic. stengl@iic.cas.cz
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Comments/Corrections
Erratum In:
Chemistry. 2013 Apr 26;19(18):5508

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Small-vessel disease in patients with Parkinson's disease: A clinicopathological study.
Next Document:  Work-Family Conflict and Job Satisfaction: Emotional Intelligence as a Moderator.