摘要
用水热法在不同的反应时间下合成了掺钐钛酸铋Bi 0.56 Sm 1.44 Ti 2O 7(BSmT)纳米颗粒,X射线衍射(XRD)结果表明,BSmT纳米颗粒为纯相结构而无其它杂质。原子力显微镜(AFM)观察显示纳米颗粒呈团聚状。扫描电子显微镜(SEM)观察显示随反应时间的延长,BSmT纳米颗粒的团聚程度逐渐加重,反应6 h、12 h和24 h纳米颗粒的粒径分布范围分别为7~14 nm、20~30 nm和28~50 nm。UV-Vis吸收光谱显示纳米颗粒粒径在300~330 nm之间的吸收率稳定。拉曼光谱显示在400 cm^(-1)、600 cm^(-1)和1400 cm^(-1)模式均有明显的峰出现,400 cm^(-1)模式是源于Ti-O八面体的扭曲,600 cm^(-1)模式是伸缩振动和弯曲振动共同作用的结果,1400 cm^(-1)的Raman模式是氧八面体位于顶点的氧原子反向偏移造成的。
Bi 0.56 Sm 1.44 Ti 2O 7(BSmT)nanoparticles were synthesized by Bi(NO 3)35H 2O,Ti(C 3H 9O)4 and Sm 2O 3with the hydrothermal method at different reaction times.X-ray diffraction(XRD)analysis showed that the BSmT nanoparticles are pure structures.Atomic force microscopy(AFM)observation showed that the particles were agglomerated,and further observation by scanning electron microscopy(SEM)showed that the agglomeration degree of BSmT nanoparticles gradually increased with the extension of reaction time,and the nanoparticles of 6 h,12 h and 24 h were reacted.The diameter distribution ranges from 7 to 14 nm,20 to 30 nm,and 28 to 50 nm,respectively.The absorption spectrum of Uv-Vis show that the absorption rate of the powder between 300 and 330 nm is relatively stable.This is due to the structure of Bi 4Ti 3O 12.The Raman spectrum shows that there are obvious peaks in the 400 cm^(-1),600 cm^(-1) and 1400 cm^(-1) modes.The 400 cm^(-1) mode is derived from the distortion of the Ti-O octahedron,and the 600 cm^(-1) mode is the result of the combination of stretching vibration and bending vibration.The Raman mode of 1400 cm^(-1) is caused by the reverse shift of the oxygen atoms at the apex of the oxygen octahedron.
作者
邓永菊
勾翰
鲁斌滔
李志琴
杜欣宇
唐玉
祁红艳
DENG Yong-ju;GOU Han;LU Bin-tao;LI Zhi-qin;DU Xin-yu;TANG Yu;QI Hong-yan(School of Physics and Electromechanical Engineering,Hubei University of Education,Wuhan 430205,China;Hubei Engineering Technology Research Center of Environmental Purification Materials,Hubei University of Education,Wuhan 430205,China)
出处
《湖北第二师范学院学报》
2021年第2期6-10,共5页
Journal of Hubei University of Education
