ONE POT SOLVOTHERMAL SYNTHESIS OF ORGANIC ACID COATED MAGNETIC IRON OXIDE NANOPARTICLES

被引：21

作者：

Paredes-Garcia, Veronica ^{[1
,2
]}

Toledo, Nestor ^{[2
]}

Denardin, Juliano ^{[2
,3
]}

Venegas-Yazigi, Diego ^{[2
,4
]}

Cruz, Carlos ^{[2
,5
]}

Spodine, Evgenia ^{[2
,5
]}

Luo, Zhiping ^{[6
,7
,8
]}

机构：

[1] Univ Andres Bello, Dept Ciencias Quim, Las Condes, Region Metropol, Chile

[2] CEDENNA, Santiago, Chile

[3] Univ Santiago Chile, Fac Ciencia, Santiago, Region Metropol, Chile

[4] Univ Santiago Chile, Fac Quim & Biol, Santiago, Region Metropol, Chile

[5] Univ Chile, Fac Ciencias Quim & Farmaceut, Santiago, Region Metropol, Chile

[6] Texas A&M Univ, Microscopy & Imaging Ctr, College Stn, TX 77843 USA

[7] Texas A&M Univ, Mat Sci & Engn Program, College Stn, TX 77843 USA

[8] Fayetteville State Univ, Dept Chem & Phys, Fayetteville, NC 28301 USA

来源：

JOURNAL OF THE CHILEAN CHEMICAL SOCIETY | 2013年 / 58卷 / 04期

关键词：

Iron oxide; nanoparticles; hematite; maghemite; solvothermal synthesis; magnetism; ELECTRON-DIFFRACTION; SIZE DISTRIBUTION; FACILE ROUTE; HEMATITE; MAGHEMITE; SPECTROSCOPY; TEMPERATURE; FABRICATION; OXIDATION; SHAPE;

D O I：

10.4067/S0717-97072013000400023

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work we present the synthesis and characterization of iron oxide nanoparticles (IONPs), which were structurally and magnetically characterized. The use of iron salts and an organic acid (l-serine or ascorbic acid) as precursors under solvothermal conditions yielded these coated IONPs. The powder X-ray diffraction pattern of FeO-1 and FeO-2 is consistent with hematite (alpha-Fe2O3) and hematite-maghemite ((alpha-Fe2O3/gamma-Fe2O3) respectively. The TEM analysis permits to estimate an average size of 10 nm for the FeO-1 sample. The magnetic characterization of the samples through the M(H) plots showed a very low coercivity value for both samples, being 53 Oe for FeO-1 and 10 Oe for FeO-2, indicating the very weak ferromagnetic character of the synthesized iron oxide species. Even though both organic acids under solvothermal conditions permit to obtain coated IONPs in one pot reaction, l-serine produces a more narrow-size distribution.

引用

页码：2011 / 2015

页数：5

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