Electron beam induced structural evolution in Fe{sub 3}O{sub 4}/SiO{sub 2} particles: A new route to obtain movable core structures
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taoyuan South Road 27th, Taiyuan, Shanxi 030001 (China)
Graphical abstract: SiO{sub 2} hollow spheres with movable Fe{sub 3}O{sub 4} cores were obtained by exposing the Fe{sub 3}O{sub 4}/SiO{sub 2} particles to the electron beam of TEM. It is a new route to obtain movable core nanostructures. Research highlights: {yields} SiO{sub 2} hollow particles with movable Fe{sub 3}O{sub 4} cores were obtained. {yields} Irradiation of electron beam induced the structural evolution. {yields} A new route to obtain hollow particles with movable core. -- Abstract: SiO{sub 2} hollow spheres with movable Fe{sub 3}O{sub 4} core were obtained by exposing the pre-synthesized Fe{sub 3}O{sub 4}/SiO{sub 2} particles (with an adsorption interlayer of ethylene glycol) under the irradiation of electron beam inside transmission electron micrograph (TEM). In the formation process, the evaporation of adsorbed ethylene glycol and the evolution of amorphous SiO{sub 2} layer played important roles, and that should be attributed to the high temperature and trapped charges induced by the irradiation of electron beam. This work provided a new route to obtain particles with movable core structure and extended the applications of electron beam.
- OSTI ID:
- 22212131
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 6 Vol. 46; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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