Facile synthesis of SnO2 mesoporous tubular nanostructure with high sensitivity to ethanol
Facile synthesis of SnO2 mesoporous tubular nanostructure with high sensitivity to ethanol
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DOI：
10.1016/j.matlet.2014.12.064
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发表时间：
2015-03
影响因子：
3
通讯作者：
X. L. Xu;Y. Chen;S. Ma;Wen-ting Li;Y. Mao;S. Yan;T. Wang
中科院分区：
文献类型：
--
作者：
X. L. Xu;Y. Chen;S. Ma;Wen-ting Li;Y. Mao;S. Yan;T. Wang
采用静电纺丝技术制备了镧掺杂sno2。采用SEM、XRD、XPS和TEM对掺杂镧的sno2进行了表征。XRD谱图表明掺杂镧的sno2纳米结构具有多晶性质。研究发现，表面粗糙的la掺杂sno2纳米纤维实际上是介孔管状纳米结构。孔径为~200 nm的介孔管的孔径分布以23 nm为中心。掺la的sno2传感器对5 ppm乙醇有较高的响应。与纯SnO2相比，la掺杂SnO2在相对较低的最佳工作温度（200℃）下对乙醇具有较高的灵敏度和良好的选择性，且响应/恢复时间短。镧掺杂的sno2介孔管状纳米结构可用于制造乙醇半导体传感器。
Lanthanum (La)-doped SnO2was facilely prepared by electrospinning technique. The La-doped SnO2was characterized by SEM, XRD, XPS and TEM. The XRD pattern indicates the polycrystalline nature of the La-doped SnO2nanostructure. It has been found that the La-doped SnO2nanofibers with a rough surface are actually mesoporous tubular nanostructure. The mesoporous tubes with a diameter of ~200 nm possess a pore size distribution centered at about 23 nm. The La-doped SnO2sensor shows a high response to 5 ppm ethanol. Compared to pure SnO2, the La-doped SnO2exhibits high sensitivity and good selectivity to ethanol at a relatively low optimum operating temperature of 200 °C, in addition to a short response/recovery time. The La-doped SnO2mesoporous tubular nanostructure could be useful in fabricating semiconducting sensors for ethanol.