Abstract
Lanthanum oxycarbonate (La 2O 2CO 3) hollow microspheres with novel porous architectures were successfully fabricated by a simple one-pot hydrothermal treatment of an aqueous solution containing glucose, La(NO 3) 3·6H 2O, and subsequent calcination. The as-prepared La 2O 2CO 3 porous hollow spheres are composed of nanoparticles with a mean particle size of 15 nm. Carbon microspheres act as not only templates but also carbon sources for the formation of La 2O 2CO 3 hollow spheres. Interestingly, the as-prepared La 2O 2CO 3 hollow spheres show a green emission band under UV excitation, which may be used as fluorescent biological labels.
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