Synthesis and applications of calcium-aluminum layered double hydroxides  - an overview

Ira Wahadah Md Ghazali; Farah Liyana Bohari; Nur Nadia Dzulkifli; Asiah Abdullah; Is Fatimah; Sheikh Ahmad Izaddin Sheikh Mohd Ghazali

doi:10.14314/polimery.2021.10.2

Synthesis and applications of calcium-aluminum layered double hydroxides - an overview

Polimery ◽

10.14314/polimery.2021.10.2 ◽

2021 ◽

Vol 66 (10) ◽

pp. 518-526

Author(s):

Ira Wahadah Md Ghazali ◽

Farah Liyana Bohari ◽

Nur Nadia Dzulkifli ◽

Asiah Abdullah ◽

Is Fatimah ◽

...

Keyword(s):

Layered Double Hydroxides ◽

Targeted Therapies ◽

Organic Anions ◽

Drug Dosing ◽

Encapsulation Process ◽

Double Hydroxides

The synthesis and application of layered calcium-aluminum double hydroxides (Ca-Al LDHs) for the encapsulation of organic anions is discussed. The mechanism of the encapsulation process was explained. These types of compounds have great potential and can be used in targeted therapies, including in drug dosing systems.

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Insight into the Fabrication of ZnAl Layered Double Hydroxides Intercalated with Organic Anions and Their Corrosion Protection of Steel Reinforced Concrete

Journal of The Electrochemical Society ◽

10.1149/2.0361916jes ◽

2019 ◽

Vol 166 (16) ◽

pp. C617-C623 ◽

Cited By ~ 3

Author(s):

Yanhui Cao ◽

Dajiang Zheng ◽

Jingsong Luo ◽

Fan Zhang ◽

Shigang Dong ◽

...

Keyword(s):

Reinforced Concrete ◽

Corrosion Protection ◽

Layered Double Hydroxides ◽

Organic Anions ◽

Steel Reinforced Concrete ◽

Double Hydroxides ◽

Insight Into

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

ChemEngineering ◽

10.3390/chemengineering3040089 ◽

2019 ◽

Vol 3 (4) ◽

pp. 89 ◽

Cited By ~ 1

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.

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