Fabrication of Macro-Mesoporous Zirconia-Alumina Materials with a One-Dimensional Hierarchical Structure
Year: 2012
Type: article
Abstract: A series of one-dimensional (1D) zirconia/alumina nanocomposites were prepared by the deposition of zirconium species onto the three-dimensional framework of boehmite nanofibers formed by dispersing boehmite nanofibers into butanol solution. The materials were calcined at 773 K and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N 2 adsorption/desorption, and infrared emission spectroscopy (IES). The results demonstrated that when the molar percentage X = 100*Zr/(Al + Zr) > 30%, extremely long ZrO 2 /Al 2 O 3 composite nanorods with evenly distributed ZrO 2 nanocrystals on the surface were formed. The stacking of such nanorods gave rise to a new kind of macroporous material without the use of any organic space filler/template or other specific technologies. The mechanism for the formation of long ZrO 2 /Al 2 O 3 composite nanorods was proposed in this work.
Source: Crystal Growth & Design
DOI: 10.1021/cg201502h
Authors: Erming Liu, Ashley J. Locke, Wayde N. Martens, Ray L. Frost, Xuzhuang Yang
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2327441996