Modular polyoxometalate-layered double hydroxide composites as efficient oxidative catalysts

Chen, Y., Yao, Z., Miras, H. N. and Song, Y.-F. (2015) Modular polyoxometalate-layered double hydroxide composites as efficient oxidative catalysts. Chemistry: A European Journal, 21(30), pp. 10812-10820. (doi: 10.1002/chem.201501214) (PMID:26176975)

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Abstract

The exploitation of intercalation techniques in the field of two-dimensional layered materials offers unique opportunities for controlling chemical reactions in confined spaces and developing nanocomposites with desired functionality. In this paper, we demonstrate the exploitation of the novel and facile ‘one-pot’ anion-exchange method for the functionalization of layered double hydroxides (LDHs). As a proof of concept, we demonstrate the intercalation of a series of polyoxometalate (POM) clusters, Na3[PW12O40]•15H2O (Na3PW12), K6[P2W18O62]•14H2O (K6P2W18), and Na9LaW10O36•32H2O (Na9LaW10) into tris(hydroxymethyl)amino-methane (Tris) modified layered double hydroxides (LDHs) under ambient conditions without the necessity of degassing CO2. Investigation of the resultant intercalated materials of Tris-LDHs-PW12 (1), Tris-LDH-P2W18 (2), and Tris-LDH-LaW10 (3) for the degradation of methylene blue (MB), rhodamine B (RB) and crystal violet (CV) has been carried out, where Tris-LDH-PW12 reveals the best performance in the presence of H2O2. Additionally, degradation of a mixture of RB, MB and CV by Tris-LDH-PW12 follows the order of CV > MB > RB, which is directly related to the designed accessible area of the interlayer space. Also, the composite can be readily recycled and reused at least ten cycles without measurable decrease of activity.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Moiras, Professor Haralampos and Song, Dr Yufei
Authors: Chen, Y., Yao, Z., Miras, H. N., and Song, Y.-F.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Chemistry: A European Journal
Publisher:Wiley-VCH Verlag
ISSN:0947-6539
ISSN (Online):1521-3765
Copyright Holders:Copyright © 2015 Wiley-VCH
First Published:First published in Chemistry: A European Journal 21(30):10812-10820
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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