Synthesis of Bare Iron Nanoparticles from Ferrocene Hexane Solution by Femtosecond Laser Pulses
| Autor: | Takahiro Nakamura, Tsuyoshi Asahi, Kenji Sakota, Tomoyuki Yatsuhashi, Takuya Okamoto, Ryo Kihara |
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| Rok vydání: | 2018 |
| Předmět: |
iron oxide
Materials science 電子顕微鏡 Iron oxide Nanoparticle 02 engineering and technology 010402 general chemistry Photochemistry 01 natural sciences ナノ粒子 law.invention chemistry.chemical_compound law Physical and Theoretical Chemistry laser chemistry electron microscopy laser fragmentation in liquid Nanosecond 021001 nanoscience & nanotechnology Laser 酸化鉄 Atomic and Molecular Physics and Optics 0104 chemical sciences Ferrocene chemistry レーザー化学 Femtosecond nanoparticles Particle size 0210 nano-technology Superparamagnetism |
| Zdroj: | Chemphyschem : a European journal of chemical physics and physical chemistry. 19(19) |
| ISSN: | 1439-7641 |
| Popis: | Iron-based nanoparticles (FeNPs) have unique and attractive properties such as superparamagnetism, biocompatibility, and catalytic activity. Although the synthesis of precious metal NPs from a metal in liquid and/or metal salt solution by a pulsed laser has been investigated, comparably little effort has been devoted to examine the production of FeNPs. Here we report the synthesis of carbon-shell free spherical NPs of iron oxide (magnetite) from ferrocene hexane solution by femtosecond near infrared laser pulses. Nanosecond UV laser pulses are used to compare the evolution of the particle size distribution as a function of laser irradiation time. The size of NPs remains constant even for extended exposure to femtosecond laser pulses, whereas it grows with exposure to nanosecond laser pulses. The primary particles are generated by photochemical reactions regardless of pulse duration; however, the fragmentation of NPs by successive femtosecond laser pulses regulates the particle size. |
| Databáze: | OpenAIRE |
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