کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1505772 | 993773 | 2010 | 7 صفحه PDF | دانلود رایگان |
C@LaCO3OH core-shell microspheres have been synthesized by a hydrothermal method using colloidal carbonaceous spheres (CCSs) as template and its by-products as reactant without any other precipitating agent added in the reaction system. The FT-IR and XRD results indicated the successful formation of the well-crystallized LaCO3OH shell with hexagonal crystal structure on the CCSs’ surface. The morphology and qualitative elemental chemical analysis were characterized by SEM, TEM, and EDS. The effects of co-solvent on the crystallinity of the LaCO3OH shell were also studied. In addition, PL result showed one emission band centered at 421 nm (λex = 365 nm) of the C@LaCO3OH microspheres. The UV–visible spectrum was also employed to investigate the optical property of the products. Further, a possible formation mechanism of the core-shell structure was proposed.
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Journal: Solid State Sciences - Volume 12, Issue 12, December 2010, Pages 1934–1940