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Synthesis of layered double hydroxides in W/O micro-emulsion: Influence of method of preparation on the physico-chemical and adsorption characteristics

Published online by Cambridge University Press:  01 February 2011

Sujata Mandal ,
Aniruddha S. Deshpande ,
Arti S. Harle  and
S. Mayadevi
Sujata Mandal
Affiliation:
[email protected], National Chemical Laboratory, Chemical Engineering and Process Development Division, Pune, India
Aniruddha S. Deshpande
Affiliation:
[email protected], National Chemical Laboratory, Chemical Engineering and Process Development Division, Pune, India
Arti S. Harle
Affiliation:
[email protected], National Chemical Laboratory, Center for Materials Characterization, India, Maharshtra, India
S. Mayadevi
Affiliation:
[email protected], National Chemical Laboratory, Chemical Engineering and Process Development Division, Pune, Maharshtra, India
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Abstract

Zn/Al layered double hydroxide was synthesized in micro-emulsion system with the oil phase comprising of cyclohexane + TX100 (surfactant) + n-hexanol (co-surfactant). Aqueous NaOH solution was used as the precipitating agent. The XRD pattern showed Zincite as the primary and hydrotalcite as the secondary phase. The d003 diffraction peak corresponded to interlayer hydroxide ion. There was no interlayer NO3- ion. The synthesized LDH showed much higher BET surface area (116.3 m2/g) than similar LDH synthesized by conventional co-precipitation technique (4.2 m2/g). Well defined flaky nano-crystals having an average dimension of 5-20 nm were observed by HRTEM.

Keywords

layeredx-ray diffraction (XRD)transmission electron microscopy (TEM)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1151: Symposium SS – Selecting and Qualifying New Materials for Use in Regulated Industries , 2008 , 1151-SS01-05
Copyright
Copyright © Materials Research Society 2009

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References

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