Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 118, Issue 29, Pages 16264-16271Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp504733r
Keywords
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Funding
- Notre Dame SEI Program
- National Science Foundation Grant [DMR10-05851]
- Ministry of Education and Science of the Russian Federation [K2-2014-001]
- Notre Dame Integrated Imaging Facility (NDIIF)
- Materials Characterization Facility (MCF)
- Center for Environmental Science and Technology (CEST)
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1005851] Funding Source: National Science Foundation
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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.
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