A magnetic zeolitic nanocomposite from occlusion of silica-coated iron species by crystalline titanosilicate-1

Xia, HS, Lin, CX, Zhou, CH, Beltramini, J, Tong, DS and Yu, WH (2010) A magnetic zeolitic nanocomposite from occlusion of silica-coated iron species by crystalline titanosilicate-1. Materials Letters, 64 24: 2752-2754. doi:10.1016/j.matlet.2010.08.060


Author Xia, HS
Lin, CX
Zhou, CH
Beltramini, J
Tong, DS
Yu, WH
Title A magnetic zeolitic nanocomposite from occlusion of silica-coated iron species by crystalline titanosilicate-1
Journal name Materials Letters   Check publisher's open access policy
ISSN 0167-577X
1873-4979
Publication date 2010-12-31
Sub-type Article (original research)
DOI 10.1016/j.matlet.2010.08.060
Volume 64
Issue 24
Start page 2752
End page 2754
Total pages 3
Place of publication Amsterdam, The Netherlands
Publisher Elsevier BV
Collection year 2011
Language eng
Abstract This paper examines the preparation of novel magnetic zeolitic nanocomposites from the occlusion of silica-coated iron species by crystalline titanosilicate-1. The results revealed that well-crystallized TS-1 could be synthesized in the presence of silica-hematite nanoparticles. Each as-made nanocomposite particle exhibited a compact and monolithic 'brick-like' morphology with a size of ca. 400 nm × 200 nm × 200 nm. The non-magnetic hematite (iron oxide) in such an as-made nanocomposite can be reduced by hydrogen to produce ferrimagnetic iron oxides and ferromagnetic elemental iron. The resultant nanocomposite consists of TS-1 as outer shell, which occludes a small portion of silica-iron species as the core with a total magnetization value of 3.7 emu/g. The silica coating and size of hematite nanoparticles, the presence of ammonium carbonate as the crystallization- mediating agent for nucleation and growth of TS-1 are critical factors when preparing such nanocomposites. © 2010 Elsevier B.V.
Keyword Crystal growth
Magnetic materials
Nanocomposites
Titanosilicate
Nanoparticles
Zeolite
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Official 2011 Collection
 
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Created: Sun, 05 Dec 2010, 00:05:09 EST