Fe_2O_3-TiO_2纳米复合颗粒的激光控制合成研究  

Synthesis of Fe_2O_3-TiO_2 Nano-composite Particles by Pulsed Laser Control

作　　者：陈岁元[1] 张一坤 Daniel Wellburn 刘常升[1] 

机构地区：[1]东北大学材料各向异性与织构教育部重点实验室,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2013年第2期205-208,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金国际(地区)合作与交流项目(51250110080);教育部留学回国人员科研启动基金资助项目(42-1);中央高校基本科研业务费专项资金资助项目(N100702001)

摘　　要：以微米级的5%Fe2O3粉末和95%TiO2粉末(以质量分数计)形成混合靶材,利用脉冲激光气相蒸发-液相收集控制合成新方法制备Fe2O3-TiO2复合纳米颗粒.采用透射电子显微镜(TEM)、X射线衍射(XRD)、红外光谱、UV光谱检测等测试技术,对实验制备的样品的形貌、组织结构、光吸收性能及合成机理等进行了系统研究.结果表明:用气相蒸发-液相收集激光法制备的Fe2O3-TiO2纳米颗粒外观呈球形,平均粒径约为40 nm,颗粒呈链状连接趋势;Fe2O3的复合改善了TiO2纳米颗粒的磁性.对样品在800～200 nm区间进行光谱分析,发现Fe2O3复合TiO2后,样品光谱发生红移,改善了TiO2纳米颗粒的光催化性能.Micron powders of 5wt% Fe2O3and 95wt% TiO2 were mixed to form a target for preparing Fe2O3-TiO2 nano-composite particles using the method of pulsed laser gas phase evaporating-liquid phase collecting.The morphology,microstructure,optical absorption properties and the synthetic mechanism of the prepared sample were characterized using the transmission electron microscopy,X-ray diffraction,infrared spectroscopy,and UV spectrum detecting technology,respectively.The results showed that the prepared Fe2O3-TiO2 particles were sphere-shaped with average diameter of about 40 nm and they linked up with one another like a chain.The Fe2O3-dopant improved the magnetism of the TiO2 nano-particles.The spectral analysis of the Fe2O3-TiO2 particles in the range of 800-200 nm exhibited red-shift,indicating that the photocatalytic performance of TiO2 nano-particles was improved.

关 键 词：脉冲激光 Fe2O3-TiO2复合纳米颗粒 合成 光谱红移 

分 类 号：O643.36[理学—物理化学]