期刊
NANOSCALE
卷 3, 期 11, 页码 4676-4684出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1nr10728c
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资金
- National Basic Research Program of China (973 Program) [2009CB939704]
- National Nature Science Foundation of China [91026014, 10905043, 11005082]
Iron oxide/SnO2 magnetic semiconductor core-shell heterostructures with high purity were synthesized by a low-cost, surfactant-free and environmentally friendly hydrothermal strategy via a seed-mediated method. The morphology and structure of the hybrid nanostructures were characterized by means of high-resolution transmission electron microscopy and X-ray diffraction. The morphology evolution investigations reveal that the Kirkendall effect directs the diffusion and causes the formation of iron oxide/SnO2 quasi-hollow particles. Significantly, the as-obtained iron oxides/SnO2 core-shell heterostructures exhibited enhanced visible light or UV photocatalytic abilities, remarkably superior to as-used alpha-Fe2O3 seeds and commercial SnO2 products, mainly owing to the effective electron hole separation at the iron oxides/SnO2 interfaces.
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