Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 15, Pages 7146-7151Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am4014506
Keywords
BaTiO3 nanowires; ultrathin; microwave absorption; transmission electron microscopy
Funding
- National Natural Foundation of China [51172047, 50872145, 51102050]
- Ministry of Science and Technology of China (973 Project) [2013CB932901, 2009CB930803]
- Shanghai Pujiang Program
- Shu Guang project of Shanghai Municipal Education Commission and Shanghai Education Development Foundation [09SG01]
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In this paper, we report the facile synthesis of ultrathin barium titanate (BaTiO3) nanowires with gram-level yield via a simple one-step hydrothermal treatment. Our BaTiO3 nanowires have unique features: single crystalline, uniform size distribution and ultra high aspect ratio. The synergistic effects including both Ostwald ripening and cation exchange reaction are responsible for the growth of the ultrathin BaTiO3 nanowires. The microwave absorption capability of the ultrathin BaTiO3 nanowires is improved compared to that of BaTiO3 nanotorus,(1) with a maximum reflection loss as high as -24.6 dB at 9.04 GHz and an absorption bandwidth of 2.4 GHz (<-10 dB). Our method has some novel advantages: simple, facile, low cost and high synthesis yield, which might be developed to prepare other ferroelectric nanostructures. The strong microwave absorption property of the ultrathin BaTiO3 nanowires indicates that these nanowires could be used as promising materials for microwave-absorption and stealth camouflage techniques.
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