Synthesis and gas sensitivities of SnO2 nanorods and hollow microspheres

Synthesis and gas sensitivities of SnO2 nanorods and hollow microspheres
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SnO2纳米棒和空心微球的合成及气体敏感性

DOI:
10.1016/j.jssc.2007.11.010
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发表时间:
2008
影响因子:
3.3
通讯作者:
--
中科院分区:
化学3区
文献类型:
--
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以SnCl 2为原料,在不添加任何表面活性剂的条件下,采用H2 O2辅助水热法合成了由直径为10- 15 nm、长度为50- 70 nm的纳米棒组成的SnO 2海胆状结构。通过添加六次甲基四胺(HMT),制备了粒径为2-3μm、壳层厚度为60- 140 nm的SnO 2空心微球。采用X射线粉末衍射(XRD)、拉曼光谱、场发射扫描电子显微镜(FE-SEM)、透射电子显微镜(TEM)、选区电子衍射(SAED)、高分辨透射电子显微镜(TEM)和光致发光光谱等技术对产物进行了表征。气敏实验表明,所合成的SnO 2材料对酒精蒸气具有良好的气敏性能,在气敏元件中具有潜在的应用前景。
SnO2urchin-like structures composed of nanorods with diameters of 10–15nm and lengths of 50–70nm have been hydrothermally synthesized via a H2O2-assisted route without any surfactant, using SnCl2as raw material. With the addition of methenamine (HMT), SnO2hollow microspheres with diameters of 2–3μm and shell thickness of 60–140nm were also prepared. The as-obtained products were examined using diverse techniques including X-ray powder diffraction (XRD), Raman spectroscopy, field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), selected-area electron diffraction (SAED), high-resolution TEM and photoluminescence spectra. The gas sensitivity experiments have demonstrated that the as-synthesized SnO2materials exhibit good sensitivity to alcohol vapors, which may offer potential applications in gas sensors.
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