期刊
NEW JOURNAL OF CHEMISTRY
卷 40, 期 8, 页码 6796-6802出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nj00365f
关键词
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资金
- Postdoctoral Science Foundation of China [2015M571361]
- Natural Science Foundation Committee (NSFC) [51502110, 61504136]
- High Tech Project of Jilin Province [20150204029GX]
Core-shell SnO2@ZnO composite nanospheres were successfully prepared by using carbon spheres as sacrificial templates via a facile three-step procedure including a hydrothermal method. In contrast, pristine SnO2 nanospheres and ZnO nanoparticles were obtained through a similar method with different steps, respectively. The composition and structures of the as-synthesized samples were confirmed by a series of characterization procedures. The obtained composite materials exhibited the special core-in hollow-shell structure at the nanometer level. And as potential sensing materials, the obtained core shell SnO2@ZnO composite nanomaterials demonstrated better gas sensing properties to ethanol including higher response, better selectivity, faster response and favorable repeatability, which may be related to the special core-in-hollow-shell structure with a porous surface and the hetero-contact between two different metal oxide semiconductors.
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