微波合成PrF3空心纳米粒子和氢氧化镨纳米棒

用快速高效的微波辐射加热方法成功地合成了PrF3空心纳米粒子和氢氧化镨纳米棒，并以所制备的氢氧化镨纳米棒为前驱体通过热处理得到了氧化镨的纳米棒.对产物进行了X-射线衍射(XRD)、透射电镜(TEM)和电子能谱(EDX)的表征.结果表明，微波合成的PrF3为球形形貌的中空纳米粒子，并具有均匀的粒径大小.微波合成的氢氧化镨纳米棒具有高的结晶度和纯度.实验结果表明，较长的微波加热时间和较高的碱浓度有利于结晶度高的氢氧化镨纳米棒的形成.初步讨论了微波条件下合成氟化镨中空纳米粒子和氢氧化镨纳米棒的形成机理.

Synthesis of PrF3 hollow nanoparticles and praseodymium hydroxide nanorods by microwave irradiation

PrF3 hollow nanoparticles and Pr(OH)3 nanorods were synthesized via a rapid microwave irradiation method and Pr6O11 nanorods were obtained by calcination of the as-prepared Pr(OH)3 nanorods as precursors.The products were characterized by X-ray powder diffraction(XRD),transmission electron microscope(TEM) and energy dispersive X-ray analysis(EDX).Results showed that the synthesized PrF3 nanoparticles by microwave irradiation were spherical-like hollow with uniform particle size.The synthesized Pr(OH)3 nanorods by microwave irradiation have high crystallinity and purity.The longer microwave heating time and the higher alkali concentrations favored the formation of Pr(OH)3 nanorods with high crystallinity.The formation mechanism of the hollow PrF3 nanoparticles and Pr(OH)3 nanorods under microwave irradiation was also investigated.