Novel self-assembled 3D flower-like magnesium hydroxide coated granular polyurethane: Implication of its potential application for the removal of heavy metals

Title
Novel self-assembled 3D flower-like magnesium hydroxide coated granular polyurethane: Implication of its potential application for the removal of heavy metals
Authors
최재영Mohsen VafaeifardShaliza IbrahimKien Tiek WongPooria PasbakhshSaravanan PichiahYeomin YoonMin Jang
Keywords
polyurethane; Self assessing
Issue Date
2019-04
Publisher
Journal of cleaner production
Citation
VOL 216-503
Abstract
Novel nanostructured three-dimensional flowerlike Mg(OH)2-incorporated granular polyurethane (designated as gPU-FMH) was prepared using a simple hydrothermal method, for which commercial MgO, water, and granular polyurethane (gPU) were applied. Interestingly, it is found that gPU and the hydrothermal process are the key factors for the assembly of the flowerlike structures of the Mg(OH)2, as its hexagonal nanosheet petals provide a high surface area. Temperature significantly controlled the morphologies of the flowerlike Mg(OH)2, and the granular gPU-FMH showed the superb adsorption capacities of 472, 1050, and 1293  mg  g− 1 (maximum adsorption capacities, qm, from Langmuir model) for Cu(II), Cd(II), and Pb(II), respectively. The proposed hypothesis for the synthesis of gPU-FMH and the removal mechanism of the heavy metals has been proved through various spectroscopic analyses. In the result of the continuous-flow column study, gPU-FMH showed a long breakthrough and a high removal capacity (184  1) of Cu(II).
URI
http://pubs.kist.re.kr/handle/201004/69158
ISSN
0959-6526
Appears in Collections:
KIST Publication > Article
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