Ultrasmall α-Fe2O3 Superparamagnetic Nanoparticles with High Magnetization Prepared by Template-Assisted Combustion Process

被引：109

作者：

Manukyan, Khachatur V. ^{[1
,4
]}

Chen, Yong-Siou ^{[2
]}

Rouvimov, Sergei ^{[3
]}

Li, Peng ^{[3
]}

Li, Xiang ^{[4
]}

Dong, Sining ^{[4
]}

Liu, Xinyu ^{[4
]}

Furdyna, Jacek K. ^{[4
]}

Orlov, Alexei ^{[3
]}

Bernstein, Gary H. ^{[3
]}

Porod, Wolfgang ^{[3
]}

Roslyakov, Sergey ^{[5
]}

Mukasyan, Alexander S. ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA

[2] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA

[3] Univ Notre Dame, Dept Elect Engn, Notre Dame, IN 46556 USA

[4] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[5] Natl Univ Sci & Technol, MISIS, Ctr Funct Nanoceram, Moscow 119049, Russia

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2014年 / 118卷 / 29期

基金：

美国国家科学基金会;

关键词：

LITHIUM-ION BATTERY; LATTICE-VIBRATIONS; NANOSTRUCTURES; FACILE; MICROSPHERES; TRANSITION; CONVERSION; NANOTUBES; MECHANISM; PATHWAY;

D O I：

10.1021/jp504733r

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A template-assisted combustion-based method is developed to synthesize the ultrasmall (below 5 nm) alpha-Fe2O3 nanoparticles. The iron and ammonium nitrate are used as oxidizers, glycine as a "fuel" and mesoporous silica (SBA-15) as a template. Because of the ultralow sizes and high crystallinity, the combustion-derived alpha-Fe2O3 nanoparticles exhibit superparamagnetism in the temperature range of 70-300 K The high specific surface area (132 m(2)/g) of alpha-Fe2O3 indicates the important role of surface magnetic spins resulting in remarkably high magnetization (21 emu/g) at 300 K.

引用

页码：16264 / 16271

页数：8

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