Organic anions in layered double hydroxides: An experimental investigation of citrate hydrotalcite

2007 ◽  
Vol 92 (2-3) ◽  
pp. 397-402 ◽  
Author(s):  
Q. Li ◽  
R. J. Kirkpatrick
Keyword(s):  
Experimental Investigation ◽  
Layered Double Hydroxides ◽  
Organic Anions ◽  
Double Hydroxides

scholarly journals Effect of Chain Length and Functional Group of Organic Anions on the Retention Ability of MgAl- Layered Double Hydroxides for Chlorinated Organic Solvents

2019 ◽  
Vol 3 (4) ◽  
pp. 89 ◽  
Author(s):  
Karen Maria Dietmann ◽  
Tobias Linke ◽  
Raquel Trujillano ◽  
Vicente Rives
Keyword(s):  
Chain Length ◽  
Organic Solvents ◽  
Layered Double Hydroxides ◽  
Functional Group ◽  
Interlayer Space ◽  
Organic Anions ◽  
Batch Experiments ◽  
Swelling Properties ◽  
Chlorinated Organic ◽  
Double Hydroxides

Nowadays, the contamination of groundwater and soils by chlorinated organic solvents is a severe and worldwide problem. Due to their swelling properties, Layered Double Hydroxides (LDHs) are potentially excellent compounds to retain chlorinated organic solvents from aquifers. By intercalating organic anions, the polarity of the interlayer space can be changed from hydrophilic to hydrophobic, enhancing the adsorption of chloro-organic molecules onto the alkyl chains of intercalated organic anions. In this study, organically modified LDHs were synthesized and their efficiency was tested in batch experiments with three different chlorinated organic solvents, namely trichloroethylene, 1,1,2-trichloroethane and trichloromethane (chloroform), to examine the influence of the chain length and the functional group of the intercalated organic anion upon the retention ability of a LDH due to different electronic interactions and different sizes of the interlayer space. All synthesized and used samples were characterized using powder X-ray diffraction, thermal analysis coupled with mass spectrometry and Fourier-transform infrared spectroscopy; freshly synthesized materials were additionally analyzed regarding their particle size distribution and specific surface area. Results of the batch experiments showed that only LDHs with intercalated long-chain organic anions could be efficient adsorbents for the removal of chlorinated organic solvents from contaminated water. A selective efficiency towards 1,1,2-trichloroethane and trichloromethane can be proposed for these reactants.

Anion-exchanging clay-modified electrodes: synthetic layered double hydroxides intercalated with electroactive organic anions

1994 ◽  
Vol 374 (1-2) ◽  
pp. 63-69 ◽  
Author(s):  
Christine Mousty ◽  
Sandrine Therias ◽  
Claude Forano ◽  
Jean-Pierre Besse
Keyword(s):  
Layered Double Hydroxides ◽  
Modified Electrodes ◽  
Organic Anions ◽  
Double Hydroxides

Orientation of Organic Anions in Zn-Al Layered Double Hydroxides with Enhanced Antibacterial Property

2017 ◽  
Vol 34 (7) ◽  
pp. 516-527 ◽  
Author(s):  
Geetanjali Mishra ◽  
Barsha Dash ◽  
Diptipriya Sethi ◽  
Sony Pandey ◽  
B.K. Mishra
Keyword(s):  
Layered Double Hydroxides ◽  
Antibacterial Property ◽  
Organic Anions ◽  
Double Hydroxides

Intercalation of colored organic anions into insulator host lattices of layered double hydroxides

1996 ◽  
Vol 7 (2-3) ◽  
pp. 151-158 ◽  
Author(s):  
Hideyuki Tagaya ◽  
Ayako Ogata ◽  
Tsuneo Kuwahara ◽  
Sumikazu Ogata ◽  
Masa Karasu ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Organic Anions ◽  
Host Lattices ◽  
Double Hydroxides

Preparation of layered double hydroxides intercalated with organic anions and their application in LDH/poly(butyl methacrylate) nanocomposites

2010 ◽  
Vol 48 (1-2) ◽  
pp. 260-270 ◽  
Author(s):  
František Kovanda ◽  
Eva Jindová ◽  
Kamil Lang ◽  
Pavel Kubát ◽  
Zdeňka Sedláková
Keyword(s):  
Layered Double Hydroxides ◽  
Organic Anions ◽  
Butyl Methacrylate ◽  
Double Hydroxides
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