Abstract
The rare-earth ion doping in nanocrystals has the advantage on improving the interested properties. As one of rare-earths, the trivalent samarium ion (Sm[Formula: see text]) was used as a dopant. The precursor of Sm[Formula: see text]-doped cadmium ferrite (CdFe2O4) nanocrystals was reacted in water-soluble polymeric nanoreactors as a dispersed phase in miniemulsion, and then calcinated to form doped nanocrystals. The 1% Sm[Formula: see text]-doped nanocrystal in small size exhibited the smaller narrow gap energy and weak photoluminescent emission intensity; which attributed to the positive influences on the photocatalytic degradation. The selected Sm[Formula: see text]-doped spinel ferrite nanocrystals provide a unique catalyzer for organic compound photodegradation.
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