English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/136844
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Absorbate-induced ordering and bilayer formation in propanol-graphite-oxide intercalates

AuthorsCabrillo García, Carlos ; Barroso-Bujans, Fabienne ; Fernández-Perea, Ricardo ; Fernández-Alonso, Félix; Bowron, Daniel T.; Bermejo, Francisco Javier
Issue Date2016
PublisherElsevier
CitationCarbon 100: 546-555 (2016)
AbstractReal-time intercalation of liquid 1-propanol within graphite oxide prepared by Brodie's method has been monitored by means of state-of-the-art neutron diffraction. We have developed a data analysis based on the paracrystalline theory which enables the characterization of stacking disorder in terms of the average number of layers contributing to Bragg scattering and the relative dispersion of the distribution of interlayer distances. We find that monolayer intercalation expands the interlayer spacing from 5.63 Å up to 9.24 Å, a process which is accompanied by noticeable improvement of stacking order. Thermally activated mobility of the molecular adsorbate is observed down to ≈ 130 K, followed by the emergence of a two-dimensional glassy state below such temperature. Heating at a slow rate from this kinetically arrested state, leads to an adsorbate-driven ordering transition at ≈ 180 K, followed by formation of a stable structure of the propanol-graphite-oxide system. This new phase enables reversible bilayer formation and also is found to persist upon removal of excess propanol in vacuo. The final propanol-graphite-oxide composite is characterized by an interlayer distance of 8.95 Å, a much-improved ordering relative to its graphite-oxide precursor, and a pillar density of one intercalant molecule for every nine >graphene-like> carbon hexagons.
URIhttp://hdl.handle.net/10261/136844
DOI10.1016/j.carbon.2016.01.062
Identifiersdoi: 10.1016/j.carbon.2016.01.062
issn: 0008-6223
Appears in Collections:(CFMAC-IEM) Artículos
(CFM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.