Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 117, Issue 10, Pages 5446-5452Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp4000544
Keywords
-
Funding
- National Natural Science Foundation of China [51102067, 81101087, 81130028, 31210103913]
- Science and Technology Research Project of Heilongjiang Education Department [12511325]
- China Postdoctoral Science Foundation [20110491052, 2012T50321, 2012M510992]
- Heilongjiang Postdoctoral Foundation [LBH-Z10139, LBH-Z11054]
- Medical Scientific Research Foundation of Heilongjiang Province Health Department [2011-165]
- Fundamental Research Funds for the Central Universities [HIT NSRIF. 2010067]
- NSERC of Canada
- NRC of Canada
- CIHR of Canada
- University of Saskatchewan
Ask authors/readers for more resources
The understanding of the interaction between the building blocks in the hybrids can advance our comprehension of design principles in high-performance microwave absorbing materials. Here, we report a hybrid material consisting of magnetite (Fe3O4) nanocrystals grown on multiwalled carbon nanotube (MWCNT) as a high-performance microwave absorber in the 2-18 GHz band, although Fe3O4 nanocrystals or MWCNTs alone or their physical mixture show little microwave absorption. The hybrid is characterized by transmission electron microscopy, X-ray diffraction, and vector network analysis, X-ray absorption near-edge structures at the C K-edge and Fe L-3,L-2-edge, and electron spin resonance analysis. Microstructural analysis reveals that Fe3O4 nanocrystals are immobilized on the MWCNT surface by a strong interaction. Charges in the MWCNT/Fe3O4 hybrids transfer from the conduction band in Fe3O4 to C 2p-derived states in the MWCNT substrate. Dipole interaction between the magnetic nanocrystals is increased. The synergetic interactions leads to much improved microwave absorption.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available