Radiation-induced catalytic reduction of chromium(VI) in aqueous solution containing TiO2, Al2O3 or SiO2 fine particles

Reduction of chromium (VI), Cr(VI) in aqueous neutral or basic solution was promoted by gamma-ray irradiation in the presence of oxide particles such as TiO2, Al2O3 or SiO2. The oxide particles behaved as a catalyst, and the efficiency of the Cr(VI) reduction increased with an increase of the irradi...

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Bibliographic Details
Published in:Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2006-09, Vol.75 (9), p.1051-1054
Main Authors: Nagaishi, Ryuji, Yoshida, Zenko, Yamada, Reiji, Hatano, Yoshihiko
Format: Article
Language:English
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Summary:Reduction of chromium (VI), Cr(VI) in aqueous neutral or basic solution was promoted by gamma-ray irradiation in the presence of oxide particles such as TiO2, Al2O3 or SiO2. The oxide particles behaved as a catalyst, and the efficiency of the Cr(VI) reduction increased with an increase of the irradiation dose irrespective of the initial Cr(VI) concentration. The insoluble Cr(III) oxide formed through the Cr(VI) reduction also acted as the catalyst.
ISSN:0969-806X
DOI:10.1016/j.radphyschem.2006.01.005