BiFeO_3的水热合成、表征及光催化性能研究  

Hydrothermal Synthesis,Characterization and Photocatalytic Properties of BiFeO_3

作　　者：谢会东[1] 贾彩霞[1] 靳莉[1] 王康康[1] 江元汝[1] 王晓昌[1] 

机构地区：[1]西安建筑科技大学理学院,西安710055

出　　处：《材料导报》2011年第18期35-37,40,共4页Materials Reports

基　　金：国家自然科学基金重点项目(51021140002);陕西省教育厅专项(09JK547)

摘　　要：以Bi(NO3)3.5H2O和Fe(NO3)3.9H2O为原料,KOH为矿化剂,聚乙二醇6000为分散剂,水热合成了单相BiFeO3粉体,利用X射线衍射、扫描电镜优化了水热合成条件,利用振动样品磁强计测定了BiFeO3的磁滞回线,并对产物进行了光催化降解甲基橙性能的研究。结果表明,200℃条件下反应6h制备的BiFeO3粉体显顺磁性,紫外光照射4h对甲基橙的降解率可达90%。Single phase of BiFeO3 powder has been synthesized by the hydrothermal method, using Bi（NO3 ）3 · 5H2O and Fe（NOs ）3 · 9H2O as raw materials, KOH as mineralizer, polyethylene glycol 6000 as dispersant. The hydrothermal synthesis conditions were optimized by X-ray powder diffraction and scanning electron microscope. The magnetic hysteresis loop of BiFeO3 was measured by vibrating-sample magnetometer. Experiment results show that BiFeO3 powders prepared at 200℃ for 6h are paramagnetic with high photocatalytic properties, and the degradation efficiency of methyl orange is near 90% under UV light irradiation for 4h.

关 键 词：水热合成 BIFEO3 表征 光催化 

分 类 号：O611.4[理学—无机化学]