High affinity of dodecylbenzene sulfonate for layered double hydroxide and resulting morphological changes

Xu, Zhi Ping and Braterman, Paul S. (2003) High affinity of dodecylbenzene sulfonate for layered double hydroxide and resulting morphological changes. Journal of Materials Chemistry, 13 2: 268-273. doi:10.1039/b207540g


Author Xu, Zhi Ping
Braterman, Paul S.
Title High affinity of dodecylbenzene sulfonate for layered double hydroxide and resulting morphological changes
Journal name Journal of Materials Chemistry   Check publisher's open access policy
ISSN 0959-9428
1364-5501
Publication date 2003
Year available 2003
Sub-type Article (original research)
DOI 10.1039/b207540g
Open Access Status Not Open Access
Volume 13
Issue 2
Start page 268
End page 273
Total pages 6
Place of publication Cambridge, England
Publisher Royal Society of Chemistry
Language eng
Subject 03 Chemical Sciences
Abstract 2 : 1 Mg : Al layered double hydroxide (LDH) with dodecylbenzene sulfonate in the gallery has been successfully prepared by the anion exchange and direct precipitation methods, and characterized by XRD, FTIR, SEM, EDX and AA. The interlayer spacing is 3.05 nm, which is in good agreement with the value estimated from an anti-parallel packing model with interpenetrating chains. We observe a high affinity of this surfactant anion for LDH in anion exchange and competition, exceeding that of sulfate and comparable to that of carbonate, and attribute this to hydrophobic interactions. More interestingly, the organic-inorganic self-assembled aggregates exhibit novel morphologies. These include bar-like particles that are several micrometers in length and tens to hundreds of nanometers in diameter, and curved as well as the more usual platy sheets. Contact with dodecylbenzene sulfonate solution places a hydrophobic surface on the normally hydrophilic Mg2Al(OH)(6).0.5CO(3)(2-)-LDH, allowing for miscible blending of inorganic and organic components in composites. Dodecylbenzene sulfonate is taken up in preference to chloride or, surprisingly, sulfate, and partly displaces even carbonate on refluxing.
Keyword Chemistry, Physical
Materials Science, Multidisciplinary
Anion-exchange
Intercalation
Hydrotalcite
Stability
Adsorption
Sulfate
Delamination
Interlayers
Temperature
Acid
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemical Engineering Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 95 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 102 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Wed, 17 Oct 2007, 11:50:57 EST