【摘要】 以SnCl4·5H2O为原料,用柠檬酸微波加热法制备了金红石结构的纳米SnO2粒子。用DSC、TGA、XRD、TEM和IR等技术对SnO2粒子进行了表征。结果表明,焙烧温度、金属与柠檬酸摩尔比对粒径影响较大,而焙烧时间、微波加热时间对粒径影响较小,对结晶度影响较大;在600℃,Sn4+与柠檬酸的摩尔比为1∶2时,制备的SnO2粒子平均晶粒尺寸为17.4nm,平均颗粒尺寸为22nm。更多还原

【Abstract】 SnO₂ nanoparticles with rutile structure were prepared by citric acid microwave heating method using SnCl₄·5H₂O as the starting materials.The nanocrystalline SnO₂ particles were characterized by DSC,TGA,XRD,TEM and IR.The results showed that calcination temperature and mole ratio of metal to citric acid were the main factors that affected the particle sizes,while the calcination time and the microwave heating time were the minor factors.The particles with crystallite mean size of 17.4 nm and particle mean size of 22 nm were obtained from a gel composed of Sn⁴+ and citric acid with mole ratio of 1∶2 after calcination at 600 ℃.更多还原