| 铁酸铋粉体：硝酸钾辅助水热合成的形貌调控及可见光催化性能(英文) |
| BiFeO3 Particles: Morpholog Control by KNO3-Assisted Hydrothermal Synthesis and Visible-Light Photocatalytic Activities |
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| 摘要: 利用硝酸钾作为辅助矿化剂，采用水热法合成了不同尺寸和形貌的铁酸铋粉体，探索了硝酸钾的加入量对产物的尺寸和形貌的影响。采用X射线衍射、扫描电镜和透射电镜以及漫反射光谱对制备的铁酸铋粉体的相结构、微观形貌以及光吸收特性进行了表征。结果显示，随着尺寸的减小，粉体的吸收带边发生蓝移。可见光降解刚果红实验表明，粒径小的铁酸铋纳米粉体颗粒具有更好的可见光催化活性。 |
| 关键词: 光催化 BiFeO3 水热法 纳米颗粒 |
| 基金项目: |
| Abstract: BiFeO3 particles with various morphologies and sizes were synthesized by a KNO3 assisted hydrothermal method. The Effect of KNO3 concentration was studied on the morphology and size of BiFeO3 crystal. The BiFeO3 samples were characterized using XRD, SEM, TEM and UV-Vis diffuse reflectance spectroscopy. The results show that the morphology and size of the micro-/nano BiFeO3 crystals not only strongly influence the optical response but also the visible-light photocatalytic activities. The absorption edge shifts to shorter wavelength and the photocatalytic activity enhances with decrease in the size of BiFeO3 particles. The results reveal that BiFeO3 can also be used as an effective photocatalyst under visible light in addition to its ferroelectric and magnetic applications. |
| Keywords: photocatalysis BiFeO3 hydrothermal synthesis nanoparticles |
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| 李 顺,林元华,张波萍,南策文.铁酸铋粉体：硝酸钾辅助水热合成的形貌调控及可见光催化性能(英文)[J].无机化学学报,2010,26(3):495-499. |
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