| Autor: |
Roy, Dayal Chandra, Matsukawa, Michiaki, Yonai, Takanori, Arakida, Minami, Taniguchi, Haruka, Nishidate, Kazume, Aisawa, Sumio, Matsushita, Akiyuki, Shiqi, Lin |
| Zdroj: |
Journal of Materials Science: Materials in Electronics; Feb2023, Vol. 34 Issue 5, p1-10, 10p |
| Abstrakt: |
In this study, we showed the effect of Sb substitution on lattice structures, physical properties and photocatalytic activities for the double-perovskite oxides with mixed valence. High quality powders of Ba 2 Tb(Bi 1 - x Sb x )O 6 ( 0.1 ≤ x ≤ 1.0 ) were successfully synthesized using a citrate pyrolysis approach. Through partial substitution of Sb at Bi site of this compound, it was possible to design oxidative photocatalysts at lower x, and reduction-type ones at higher x. These findings are discussed on the basis of the conduction and valence band edge potentials of a series of Ba 2 (Tb, Pr)(Bi, Sb)O 6 photocatalysts. The Sb substituted sample with the x = 0.6 composition predicted from the machine learning procedure exhibited the highest performance of methylene blue degradation, which is comparable to typical degradation rates for good perovskite catalysts. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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