Open AccessFabrication of Macro-Mesoporous Zirconia-Alumina Materials with a One-Dimensional Hierarchical Structure
Author(s) -
Erming Liu,
Ashley J. Locke,
Wayde N. Martens,
Ray L. Frost,
Xuzhuang Yang
Publication year - 2012
Publication title -
crystal growth and design
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.966
H-Index - 155
eISSN - 1528-7505
pISSN - 1528-7483
DOI - 10.1021/cg201502h
Subject(s) - boehmite , nanorod , materials science , mesoporous material , chemical engineering , scanning electron microscope , cubic zirconia , transmission electron microscopy , zirconium , calcination , nanocomposite , composite number , nanotechnology , composite material , ceramic , chemistry , organic chemistry , metallurgy , aluminium , engineering , catalysis
A series of one dimensional (1D) zirconia/alumina nanocomposites were prepared by the deposition of zirconium species onto the 3D framework of boehmite nanofibres formed by dispersing boehmite nanofibres into butanol solution. The materials were calcined at 773K and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), N2 adsorption/desorption, infrared emission spectroscopy (IES). The results demonstrated that when the molar percentage X=100*Zr/(Al+Zr) was > 30 %, extremely long ZrO2/Al2O3 composite nanorods with evenly distributed ZrO2 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 ZrO2/Al2O3 composite nanorods was proposed in this work
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