Gamma-radiolytic preparation of multi-component oxides
Artikel i vetenskaplig tidskrift, 2016

The preparation of solid precursors to Zn1-XCdXO and (Lu,Y)(3)Al5O12:Ce induced by Co-60 gamma-ray irradiation of aqueous solutions containing soluble metal salts and ammonium formate is presented: Due to the irradiation, crystalline zinc carbonate hydroxide Zn-4(CO3)(OH)(6). H2O or amorphous carbonates of Lu, Y and Al were formed in the solutions. After calcination at 500 degrees C, the agglomerated phase-pure Zn1-XCdXO with crystallite size about 50 nm was obtained if the Cd concentration in solutions remained below 16 M% (with respect to Zn) with x being up to 0.035. The solid precursors to garnets contained the intended concentration of all elements, according to X-ray fluorescence analysis. After calcination at 1200 degrees C in mild vacuum, the respective phase-pure garnets with crystallite size 100 nm or their solid solution were produced when the Ce dopation was kept below 2 M% (with respect to rare-earth metals). The Ce solubility in the garnet lattice was estimated as 1-2 M% at the calcination conditions used.

X-ray diffraction

Zinc oxide

Radiation synthesis

Synthetic garnet

Inorganic oxide

Författare

L. Prochazkova

Ceske vysoke uceni technicke v Praze

J. Barta

Ceske vysoke uceni technicke v Praze

V. Cuba

Ceske vysoke uceni technicke v Praze

Christian Ekberg

Kemi och kemiteknik, Energi och material, Kärnkemi

Sabrina Tietze

Kemi och kemiteknik, Energi och material, Kärnkemi

I. Jakubec

Institute of Inorganic Chemistry of the Academy of Sciences of the Czech Republic, v.v.i.

Radiation Physics and Chemistry

0969-806X (ISSN)

Vol. 124 68-74

Ämneskategorier

Kemiteknik

DOI

10.1016/j.radphyschem.2015.11.006