Sonochemical Synthesis of Nanosized Hollow Hematite
Nanosized hollow iron oxide was synthesized using high-intensity ultrasound with carbon nanoparticles as a template. The hollow iron oxide was characterized by TEM, STEM, EELS, XRD, Raman, Mössbauer, and SQUID analyses. The TEM examination, EDS, and EELS analyses demonstrated the formation of iron o...
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Published in | Journal of the American Chemical Society Vol. 129; no. 8; pp. 2242 - 2243 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
United States
American Chemical Society
28.02.2007
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Subjects | |
Online Access | Get full text |
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Summary: | Nanosized hollow iron oxide was synthesized using high-intensity ultrasound with carbon nanoparticles as a template. The hollow iron oxide was characterized by TEM, STEM, EELS, XRD, Raman, Mössbauer, and SQUID analyses. The TEM examination, EDS, and EELS analyses demonstrated the formation of iron oxide with nanosized hollow cores. XRD, Raman, and Mössbauer studies revealed that the hollow iron oxide is the most thermodynamically stable iron oxide, hematite (α-Fe2O3). Magnetization measurements showed that the hollow nanospheres of hematite are weakly ferromagnetic. Upon annealing, the hollow hematite becomes more crystalline but still maintains the hollow structure. Without the use of the carbon template, only agglomerated amorphous iron oxide was obtained. |
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Bibliography: | ark:/67375/TPS-53PKC5PX-K istex:E6F2A6CB7C646E5692AB513DF75301E3783285FA ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0002-7863 1520-5126 |
DOI: | 10.1021/ja0676657 |