NDLI: Tuneable ultra high specific surface area $Mg/Al-CO

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wangriya, Aunchana Chen, Chunping Buffet, Jean-charles O'hare, Dermot
Description	Author Affiliation: Chen C ( Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK. dermot.ohare@chem.ox.ac.uk.)
Abstract	We report the synthesis of tuneable ultra high specific surface area Aqueous Miscible Organic solvent-Layered Double Hydroxides (AMO-LDHs). We have investigated the effects of different solvent dispersion volumes, dispersion times and the number of re-dispersion cycles specific surface area of AMO-LDHs. In particular, the effects of acetone dispersion on two different morphology AMO-LDHs $(Mg_{3}Al-CO_{3}$ AMO-LDH flowers and $Mg_{3}Al-CO_{3}$ AMO-LDH plates) was investigated. It was found that the amount of acetone used in the dispersion step process can significantly affect the specific surface area of $Mg_{3}Al-CO_{3}$ AMO-LDH flowers while the dispersion time in acetone is critical factor to obtain high specific surface area $Mg_{3}Al-CO_{3}$ AMO-LDH plates. Optimisation of the acetone washing steps enables $Mg_{3}Al-CO_{3}$ AMO-LDH to have high specific surface area up to 365 $m^{2}$ $g^{−1}$ for LDH flowers and 263 $m^{2}$ $g^{−1}$ for LDH plates. In addition, spray drying was found to be an effective and practical drying method to increase the specific surface area by a factor of 1.75. Our findings now form the basis of an effective general strategy to obtain ultrahigh specific surface area LDHs.
ISSN	14779226
Issue Number	37
Journal	Dalton Trans.
Volume Number	44
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2015-10-07
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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