期刊
JOURNAL OF RARE EARTHS
卷 30, 期 4, 页码 350-354出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1002-0721(12)60058-1
关键词
Biotemplate; porous; CeO2; microspheres; photocatalysis; rare earths
资金
- National Natural Science Foundation of China [NSFC21071107]
- Natural Science Foundation of Jiangsu Province [BK2008541]
- Key Laboratory for Oil-gas Storage and Transportation Engineering of Jiangsu Province [CY0901]
- Creative Project of Post-graduate of Jiangsu Province [CX10B-256Z]
- Key Laboratory for Environmental Function Materials of Suzhou [SZS201008]
- Industrial Surport Project of Suzhou [SYG201029]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Porous CeO2 hollow microspheres were successfully prepared through a facile process by using the rape pollen as the biotemplate. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), the N-2 adsorption and desorption, X-ray diffraction (XRD), UV-vis diffuse reflectance spectra, and hydrogen temperature-programmed reduction (H-2-TPR) were used for their characterization. The results showed that the obtained materials exhibited the same morphology as that of the pollen template, with a diameter of ca. 10 mu m, and the surface was evenly covered with a special network-like structure with mesh size of about 0.3 mu m, and the Brunauer-Emmett-Teller (BET) surface area was measured to be 156 m(2)/g. The detailed property investigation inferred that the product exhibited better photocatalytic activity in acid fuchsine decolorization under daylight because of higher surface area, smaller crystallite size and higher oxygen capacity.
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