PREPARATION AND PROPERTIES OF UNIFORM-COATED COLLOIDAL PARTICLES .6. TITANIA ON ZINC-OXIDE

被引:120
作者
OCANA, M [1 ]
HSU, WP [1 ]
MATIJEVIC, E [1 ]
机构
[1] CLARKSON UNIV,DEPT CHEM,POTSDAM,NY 13699
关键词
D O I
10.1021/la00060a008
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Nearly spherical particles of zinc oxide were prepared and coated with uniform layers of amorphous titanium dioxide by hydrolysis and condensation of titanium butoxide in ethanolic solutions containing the preformed cores. The thickness of the coating could be altered by adjusting the concentrations of the reactants (titanium alkoxide and water) and the amount of added ZnO. On calcination > 700-degrees-C the shells of TiO2 react with the ZnO cores forming zinc titanates of various stoichiometries (alpha-Zn2TiO4, Zn2Ti3O8, and ZnTiO3). The optical properties of the solids as prepared and after calcination at several temperatures were measured and evaluated in terms of the Mie scattering coefficients.
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页码:2911 / 2916
页数:6
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