Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 114, Issue 14, Pages 6237-6242Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp910514f
Keywords
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Funding
- National Basic Research Program of China [2007CB613301]
- National Science Foundation of China [20777026, 20977039]
- Program for Distinguished Young Scientist of Hubei Province [2009CDA014]
- Program for Innovation Team of Hubei Province [2009CDA048]
- MOE [CCNU09A02014, CCNU09C01009]
- Program for New Century Excellent Talents in University [NCET-07-0352]
- Scientific Research Foundation
- Open Fund of Key Laboratory of Catalysis and Materials Science of Huber Province [CHCL09001]
- Hone Kong Polytechnic University [GYF08]
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In this study, we developed a facile microwave-assisted ethylene glycol approach to synthesize Fe3O4 nanoroses in the presence of the PEO-PPO-PEO block copolymer (P123) The resulting products were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and Fourier transform infrared absorption spectroscopy (FT-IR) The characterization results revealed that the Fe3O4 nanoroses were formed by P123 directed assembly of nanoparticles under microwave irradiation Besides size and morphology-dependent magnetic properties, the as-prepared nanocrystalline Fe3O4 nanoroses exhibited high sensitivity and good reversibility ion gas-sensing of ethanol vapor at room temperature. Our results suggest these Fe3O4 nanoroses are promismu materials for magnetic and sensing applications
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