Title of article
Effect of oxygen vacancy variation on the photo-assisted degradation and structural phase transition of oxygen defective Ba(Fe,Co)O3−x
Author/Authors
Sun، نويسنده , , Mengmeng and Jiang، نويسنده , , Yinshan and Li، نويسنده , , Fangfei and Xia، نويسنده , , Maosheng and Xue، نويسنده , , Bing and Liu، نويسنده , , Darui، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
9
From page
801
To page
809
Abstract
The different effect of oxygen vacancy variation on photo-assisted degradation effect and structural phase transition of oxygen defective Ba(Fe,Co)O3−x in dye degradation were investigated via comparative studies. The samples of perovskite BaFeO3−x and BaCoO3−x were synthesized at 700 °C by citrate sol–gel method. Samples synthesized above 700 °C show oxygen deficiency. With oxygen vacancy increasing, the BaFeO3−x becomes instable, whereas BaCoO3−x improves the stability. The instability is due to CO2 adsorption activity of oxygen vacancies, and then this may make negative effects on their photo-assisted degradation effect. So finally, the oxygen vacancies take different effects on photo-assisted degradation effect of Ba(Fe,Co)O3−x.
Keywords
D. Phase transitions , D. Defects , A. Oxides , D. Catalytic properties , D. Optical properties
Journal title
Materials Research Bulletin
Serial Year
2011
Journal title
Materials Research Bulletin
Record number
2100840
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