均匀α-氧化铁纳米粒子的制备及表征

Preparation and Characterization of Uniform x-Fe_2O_3 Particles

纳米粒子的制备已成为当今的研究热点 ,而α 氧化铁纳米粒子由于其独特的性能与广泛的应用 ,引起了多方面的关注。分别采用均匀沉淀法和强迫水解法来制备氧化铁纳米粒子 ,用XRD谱图和TEM电镜进行表征 ,并探讨了这两种制备方法及反应温度。

Ultrafine particles will be a most significant material in the 21st century. Monodispersed hematite nanoparticles have a wide use in the world. More and more attention will be drawn to their study. The methods for preparation of ferric hydrous oxide solutions (consisting of particles uniform in shape of narrow size distribution) are described in detail. The final outcome of the hydrolysis and uniform precipitation process depends on ferric ions, temperature, time of aging, the nature of the anions present etc. In summary, the shape and size of the particles depend on the environmental conditions during the process. The particles are characterized by TEM and XRD. In this experiment, we give some improvement, such as simplified experiment conditions and greatly improve the yield