High saturation magnetization of γ-Fe2O3 nano-particles by a facile one-step synthesis approach

被引：137

作者：

Cao, Derang ^{[1
]}

Li, Hao ^{[2
]}

Pan, Lining ^{[1
]}

Li, Jianan ^{[1
]}

Wang, Xicheng ^{[2
]}

Jing, Panpan ^{[1
]}

Cheng, Xiaohong ^{[1
]}

Wang, Wenjie ^{[3
]}

Wang, Jianbo ^{[1
,2
]}

Liu, Qingfang ^{[1
]}

机构：

[1] Lanzhou Univ, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ, Key Lab Special Funct Mat & Struct Design, Minist Educ, Lanzhou 730000, Peoples R China

[3] Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Peoples R China

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

关键词：

OXIDE NANOPARTICLES; MAGHEMITE; ALPHA-FE2O3; SIZE; OXIDATION; FE3O4; N; N-DIMETHYLFORMAMIDE; NANOCRYSTALLITES; FABRICATION; TRANSITION;

D O I：

10.1038/srep32360

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We have demonstrated the synthesis of gamma-Fe2O3 nano-particles through a facile and novel calcination process in the air. There is no pH regulation, gas atmosphere, additive, centrifugation or other complicated procedures during the preparing process. A detailed formation process of the nano-particles is proposed, and DMF as a polar solvent may slower the reaction process of calcination. The structures, morphologies, and magnetic properties of gamma-Fe2O3 nano-particles were investigated systematically, and the pure gamma-Fe2O3 nano-particles obtained at 200 degrees C display uniform morphology good magnetic property. The saturation magnetization of obtained pure gamma-Fe2O3 is about 74 emu/g, which is comparable with bulk material (76 emu/g) and larger than other results. In addition, the photocatalytic activity for degradation of methylene blue is also studied, which shows proper photocatalytic activity.

引用

页数：9

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