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- Title
Monodisperse CaFeO microspheres: facile preparation, characterization, and optical properties.
- Authors
Shen, Yu; Zhao, Qidong; Li, Xinyong; Zhang, Dongke
- Abstract
Micro/nanospheres have been intensively investigated recently because of their attractive applications. While long reaction times, harsh reaction conditions or multiple steps are generally required for the effective synthesis of ferrites, in this study, CaFeO microspheres were successfully fabricated via a facile one-pot solvothermal method, utilizing polyethylene glycol as a surfactant. XRD, HRTEM, and SEM analysis revealed that the CaFeO microspheres prepared were monodisperse in nature, with uniform diameters of about 450 nm and porous interior structure. The CaFeO microspheres exhibited a clear absorption capacity in the visible light region and the band-gap energy was about 1.95 eV. Furthermore, photovoltaic response of the CaFeO microspheres was shown in the UV-Visible spectral region, due to the effective photo-induced charge carrier separation. The CaFeO microspheres may find potential applications in many fields, such as photocatalysis, photovoltaics, sensors, optical, and biomedical devices.
- Subjects
MICROSTRUCTURE; OPTICAL properties; FERRITES; POLYETHYLENE glycol; SURFACE active agents; CALCIUM; IRON oxides; ABSORPTION
- Publication
Journal of Materials Science, 2012, Vol 47, Issue 7, p3320
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-011-6171-7