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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Novel insights on magadiite disaggregation: a multitechnique study on thermal stability

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Author(s):
de Souza e Silva, Juliana Martins [1, 2, 3] ; Paul, Geo [1, 2] ; Bendall, James [4] ; Bisio, Chiara [5, 1, 2] ; Marchese, Leonardo [1, 2] ; Pastore, Heloise O. [3]
Total Authors: 6
Affiliation:
[1] Univ Piemonte Orientale, Dipartimento Sci & Innovaz Tecnol, I-15121 Alessandria - Italy
[2] Univ Piemonte Orientale, Ctr NanoSiSTeMI, I-15121 Alessandria - Italy
[3] Univ Estadual Campinas, Inst Quim, BR-13083861 Campinas, SP - Brazil
[4] Univ Cambridge, Ctr Neurosci, Cambridge CB3 0FF - England
[5] ISTM CNR Ist Sci & Tecnol Mol, Milan - Italy
Total Affiliations: 5
Document type: Journal article
Source: Physical Chemistry Chemical Physics; v. 15, n. 32, p. 13434-13445, 2013.
Web of Science Citations: 7
Abstract

Disaggregated magadiite was obtained through ion-exchange in acidic media from magadiite intercalated in the synthesis with cetyltrimethylamonium cations. The combination of Soxhlet extraction and ultrasound during the procedure resulted in different morphology and different properties when compared with the pristine material, as observed by SEM. Thermal and surface properties studies performed by VT-XRD, TG, VT-FTIR, HETCOR SS-NMR, and N-2 physisorption show that disaggregated magadiite presents a basal space of 1.35 nm and that {[}SiO4] entities of adjacent magadiite silicate layers connect during ion-exchange under ultrasound. Despite these bonding events, the surface area increased from 20-26 m(2) g(-1) in CTA-magadiite to 55-72 m(2) g(-1) in disaggregated magadiite. (AU)