Visible Light Responsive Perovskite BiFeO3 Pills and Rods with Dominant {111}c Facets

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• 作者：Linfeng Fei ; Jikang Yuan ; Yongming Hu ; Changzheng Wu ; Junling Wang ; Yu Wang
• 刊名：Crystal Growth & Design
• 出版年：2011
• 出版时间：April 6, 2011
• 年：2011
• 卷：11
• 期：4
• 页码：1049-1053
• 全文大小：960K
• 年卷期：v.11,no.4(April 6, 2011)
• ISSN：1528-7505

文摘

Constraint of the growth directions or exposed facets of nano-/microstructures has been long regarded as a popular research topic due to the various anisotropic properties of crystals. We report here, for the first time, not only uniform and phase-pure but also tunable perovskite BiFeO₃ crystallites with different predominantly exposed facets have been successfully synthesized via a facile one-pot hydrothermal approach at 200 掳C under the presence of potassium hydroxide and polyethylene glycol. Pills and rods with dominant {111}_c facets and cubes with {100}_c exposed facets have been obtained by adjusting the alkaline conditions of the precursor solution. Furthermore, due to the distinct dominant facets of BiFeO₃ crystallites, {111}_c dominant pills and rods grant a significant enhanced visible light response, suggesting that the designed structures can give rise to better performance in future photovoltaic and photocatalytic applications of BiFeO₃.