Fe2TiO5/α-Fe2O3 nanocomposite hollow spheres with enhanced gas-sensing properties
作者： R. Yu , Z. Li , D. Wang , X. Lai , C. Xing
DOI: 10.1016/J.SCRIPTAMAT.2010.03.043
关键词: Porosity 、 Materials science 、 SPHERES 、 Microsphere 、 Grain boundary 、 Chemical engineering 、 Nanotechnology 、 Organic gases 、 Nanocrystal 、 Nanocomposite 、 General Materials Science 、 Condensed matter physics
摘要: Hollow spheres of Fe2TiO5/alpha-Fe2O3 nanocomposite were prepared via a simple impregnating method using carbonaceous polysaccharide microspheres as hard templates. These hollow possessed porous shells contributed by homogeneously arranged alpha-Fe2O3 and Fe2TiO5 nanocrystals. With the higher specific-surface area provided spherical lower grain boundary resistant between Fe2TiO5, these showed much improved gas-sensing properties for some organic gases. A sample with ratio about 1:1 optimum value. (C) 2010 Acta Materialia Inc. Published Elsevier Ltd. All rights reserved.
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