Journal of The Chilean Chemical Society | |
ONE POT SOLVOTHERMAL SYNTHESIS OF ORGANIC ACID COATED MAGNETIC IRON OXIDE NANOPARTICLES | |
VENEGAS-YAZIGI, DIEGO1  TOLEDO, NÉSTOR1  DENARDIN, JULIANO1  SPODINE, EVGENIA1  PAREDES-GARCÍA, VERÓNICA2  LUO, ZHIPING3  CRUZ, CARLOS3  | |
[1] CEDENNA, Chile;Universidad Andres Bello, Chile;Universidad de Santiago de Chile, Chile | |
关键词: Iron oxide; nanoparticles; hematite; maghemite; solvothermal synthesis; magnetism; | |
DOI : 10.4067/S0717-97072013000400023 | |
学科分类:化学(综合) | |
来源: Sociedad Chilena de Quimica | |
【 摘 要 】
In this work we present the synthesisand characterization of iron oxide nanoparticles (IONPs), which were structurallyand magnetically characterized. The use of iron salts and an organic acid (l-serineor ascorbic acid) as precursors under solvothermal conditions yielded thesecoated IONPs. The powder X-ray diffraction pattern of FeO-1 and FeO-2is consistent with hematite (α-Fe2O3)and hematite-maghemite ((α-Fe2O3/γ-Fe2O3)respectively. The TEM analysis permits to estimate an average size of 10 nmfor the FeO-1 sample. The magnetic characterization of the samples throughthe M(H) plots showed a very low coercivity value for both samples, being53 Oe for FeO-1 and 10 Oe for FeO-2, indicating the very weak ferromagneticcharacter of the synthesized iron oxide species. Even though both organic acidsunder solvothermal conditions permit to obtain coated IONPs in one pot reaction,l-serine produces a more narrow-size distribution.
【 授权许可】
Unknown
【 预 览 】
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