Fabrication of iron oxide nanoparticles using laser ablation in liquids

11th Asia Pacific Conference on Plasma Science and Technology;25th Symposium on Plasma Science for Materials

Iwamoto, T.^1 ; Ishigaki, T.^2

Institute of Sustainability Research and Education, Hosei University, 2-17-1 Fujimi, Chiyoda-ku, Tokyo 102-8160, Japan^1

Department of Chemical Science and Technology, Hosei University, 3-7-2 Kajino-cho, Koganei-shi, Tokyo 184-8584, Japan^2

关键词: Dispersibilities;    Iron oxide nanoparticle;    Large particles;    Laser ablation in liquid;    Poly(N-vinyl-2-pyrrolidone);    Protective reagent;    Small particles;    Synthesized powder;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/441/1/012034/pdf
DOI  :  10.1088/1742-6596/441/1/012034

来源: IOP

【 摘 要 】

Nanoparticles of iron oxides were synthesized through the ablation of the bulk-targets of Fe, Fe3O4, and Fe2O3in water by the irradiation of a Nd:YAG laser. Our samples prepared via the laser ablation method displayed small (ca. 1 nm in diameter) and large (over 5 nm in diameter) particles. The small particles were well-dispersed, whereas large particles were agglomerated. The FeO and Fe3O4phases were formed in the synthesized powders irrespective of the kind of targets. The formation of the other phases, Fe and Fe2O3, changed depending on the the kind of targets used in the laser ablation. Poly(N-vinyl-2-pyrrolidone) (PVP) as a protective reagent was employed to disperse large particles in our samples, and accordingly, their dispersibility was improved as mole concentration of PVP increased.