2009
DOI: 10.1021/ja903246e
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Facile Synthesis of Superparamagnetic Fluorescent Fe3O4/ZnS Hollow Nanospheres

Abstract: A very simple strategy for the synthesis of superparamagnetic and fluorescent Fe(3)O(4)/ZnS hollow nanospheres is presented. These hollow nanospheres are not only nontoxic with a highly porous shell and have diameters of <100 nm but also exhibit very good magnetic resonance and fluorescence.

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Cited by 138 publications
(103 citation statements)
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“…This indicates that the water-splitting reaction over the samples is associated with the DRS absorption spectra [44]. Compared with other typical TiO2/SrTiO3 nanostructures with different morphologies [26,[30][31][32][33][34], the H-TiO2/SrTiO3 heterostructured porous microspheres present much higher photocatalytic activity. This can be attributed to the synergistic effect of the unique porous sphere structure, heterostructure, and appropriate oxygen-vacancy and Ti 3+ contents, which serve as trapping sites, preventing the rapid recombination of charge carriers and improving the interfacial electron-transfer rate and the migration efficiency of photoinduced electrons.…”
Section: Resultsmentioning
confidence: 90%
See 1 more Smart Citation
“…This indicates that the water-splitting reaction over the samples is associated with the DRS absorption spectra [44]. Compared with other typical TiO2/SrTiO3 nanostructures with different morphologies [26,[30][31][32][33][34], the H-TiO2/SrTiO3 heterostructured porous microspheres present much higher photocatalytic activity. This can be attributed to the synergistic effect of the unique porous sphere structure, heterostructure, and appropriate oxygen-vacancy and Ti 3+ contents, which serve as trapping sites, preventing the rapid recombination of charge carriers and improving the interfacial electron-transfer rate and the migration efficiency of photoinduced electrons.…”
Section: Resultsmentioning
confidence: 90%
“…Compared with their bulk counterparts of the same size, porous nanoparticles exhibit superior performance owing to their high surface area, multiple channels, and lower resistance to mass transfer in catalytic systems, all of which endow them with multifunctional capabilities [30,31]. Until now, there have been no reports on the synthesis of TiO2/SrTiO3 porous microspheres.…”
Section: Introductionmentioning
confidence: 99%
“…Generally, two main strategies, e.g., template‐based (hard‐ and soft‐templates) and template‐free (Kirkendall effect, galvanic replacement, and Ostwald ripening), are used to obtain well‐defined hollow spheres with different compositions and shapes 5, 10, 11, 12, 13, 14, 15, 16, 17. Recent researches have demonstrated that hollow spheres constructed with 1D nanorods/nanoneedles18 and 2D nanosheets19, 20, 21, 22 even exhibit faster surface reaction rates and better physicochemical stability because they occupy much larger specific surface areas than the most hollow spheres composed of 0D nanoparticles,23 and simultaneously inherit the characteristics of the constituent units.…”
Section: Introductionmentioning
confidence: 99%
“…Wang et al [122] were the first to report the successful synthesis of Fe 3 O 4 /ZnS hollow, luminescent, and superparamagnetic nanospheres by a so-called corrosionaided Ostwald ripening process (Fig. 2).…”
Section: Qdsmentioning
confidence: 99%
“…This group generated a single crystalline magnetite shell around a drug-loaded polymer capsule [122] with permission from the American Chemical Society [122] with permission from the American Chemical Society and, subsequently, modified the magnetic capsule with a single QD Str. 24.…”
Section: Qdsmentioning
confidence: 99%