A facile route for synthesis of mesoporous barium titanate crystallites
authors Hou, RZ; Ferreira, P; Vilarinho, PM
nationality International
journal MICROPOROUS AND MESOPOROUS MATERIALS
author keywords mesoporous materials; BaTiO3; crystallite; mesoporous metal oxides
keywords METAL-OXIDES; COPOLYMER; NANOCOMPOSITE; TEMPLATES; PARTICLES; DESIGN; FILMS
abstract Well crystallized BaTiO3 with meso-structure inside the crystallites was directly synthesized from the solution via a simple sol-precipitation process with cetyltrimethylammonium chloride (C(16)TMAC) as the cationic surfactant. Mesoporous structure (pore size distribution peaking at 2.2 nm) with single crystalline wall was obtained after removal of the template by calcination. The pores were locally ordered for some regions but wormhole-like on the whole view. The resulting materials were characterized with wide-angle and low-angle X-ray diffraction, SEM, TEM and low temperature nitrogen adsorption-desorption isotherms. A specific surface BET area of similar to 50 m(2)/g was obtained. Formation mechanisms of the single-crystalline mesoporous structure are discussed. The present method avoids onerous heat treatment procedure for crystallization and provides an efficient way to synthesize mesoporous functional multi-metallic oxides with single-crystalline wall. (C) 2007 Elsevier Inc. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 1387-1811
year published 2008
volume 110
issue 2-3
beginning page 392
ending page 396
digital object identifier (doi) 10.1016/j.micromeso.2007.06.051
web of science category Chemistry, Applied; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000254689200023
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