English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/134830
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

Atomically resolved three-dimensional structures of electrolyte aqueous solutions near a solid surface

AuthorsMartín-Jiménez, Daniel; Chacón, Enrique ; Tarazona, Pedro; García García, Ricardo
Issue Date15-Jul-2016
PublisherNature Publishing Group
CitationNature Communications 7: 12164 (2016)
AbstractInterfacial liquid layers play a central role in a variety of phenomena ranging from friction to molecular recognition. Liquids near a solid surface form an interfacial layer where the molecular structure is different from that of the bulk. Here we report atomic resolution three-dimensional images of electrolyte solutions near a mica surface that demonstrate the existence of three types of interfacial structures. At low concentrations (0.01–1 M), cations are adsorbed onto the mica. The cation layer is topped by a few hydration layers. At higher concentrations, the interfacial layer extends several nanometres into the liquid. It involves the alternation of cation and anion planes. Fluid Density Functional calculations show that water molecules are a critical factor for stabilizing the structure of the interfacial layer. The interfacial layer stabilizes a crystal-like structure compatible with liquid-like ion and solvent mobilities. At saturation, some ions precipitate and small crystals are formed on the mica.
DescriptionSupplementary information: 1. Supplementary Figures 1-7, Supplementary Methods and Supplementary References [pdf file].-- 2. Supplementary Movie 2: 3D AFM image of the mical-KCl aqueous solution (~ 4 M) was obtained by exciting the cantilever at 838 kHz (2nd eigenmode); k= 921 N/m, Q= 24; A0= 0.11 nm. Data points= 1984000 [movie].-- 3. Supplementary Movie 3: 3D AFM image of the mical-NaCl aqueous solution (~ 5 M) was obtained by exciting the cantilever at 159 kHz (1st eigenmode), k= 24 N/m, Q= 7; A0= 0.23 nm. Data points = 2400000 [movie].
Publisher version (URL)http://dx.doi.org/10.1038/ncomms12164
URIhttp://hdl.handle.net/10261/134830
DOI10.1038/ncomms12164
ISSN2041-1723
Appears in Collections:(ICMM) Artículos

Files in This Item:
File Description SizeFormat 
solid_surface_Martin.pdf1,07 MBAdobe PDFThumbnail
View/Open
ncomms12164-s1.pdfSupplementary Information 1 [pdf file]917,75 kBAdobe PDFThumbnail
View/Open
ncomms12164-s2.movSupplementary Movie 22,3 MBVideo QuicktimeView/Open
ncomms12164-s3.movSupplementary Movie 32,64 MBVideo QuicktimeView/Open
ncomms12164-s4.movSupplementary Movie 42,65 MBVideo QuicktimeView/Open
ncomms12164-s2.flv1,34 MBFlash VideoView/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.