The alcohol-sensing behaviour of SnO2 nanorods prepared by a facile solid state reaction

The alcohol-sensing behaviour of SnO2 nanorods prepared by a facile solid state reaction
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简易固相反应制备 SnO2 纳米棒的酒精传感行为

DOI:
10.1088/1757-899x/170/1/012002
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发表时间:
2017-02
期刊:
Materials Science and Engineering
影响因子:
--
通讯作者:
HY Zhao
HY Zhao
中科院分区:
其他
文献类型:
--
作者:
F Gao;XP Ren;WJ Wan;YP Zhao;YH Li;HY Zhao

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在室温下,在 NaCl-KCl 混合物介质中,通过简单的固相反应制备了直径范围为 12-85 nm 的 SnO2 纳米棒,并分别在 600、680、760 和 840 oC 下煅烧。采用 XRD、TEM 和 XPS 对 SnO2 纳米棒的结构和形貌进行了表征。研究了煅烧温度对不同直径SnO2纳米棒气敏行为的影响。结果表明,所有传感器对酒精都有良好的响应。在低煅烧温度下制备的细长纳米棒的响应明显好于在高煅烧温度下制备的粗纳米棒。该机制归因于Sn/O的非化学计量比和细长纳米棒的较大表面积增强了氧表面吸附。
SnO2 nanorods with the range of 12-85 nm in diameter were fabricated by a facile solid state reaction in the medium of NaCl-KCl mixture at room temperature and calcined at 600, 680, 760 and 840 oC, respectively. The XRD, TEM and XPS were employed to characterize the structure and morphology of the SnO2 nanorods. The influence of the calcination temperature on the gas sensing behaviour of the SnO2 nanorods with different diameter was investigated. The result showed that all the sensors had good response to alcohol. The response of the gracile nanorods prepared at a low calcined temperature demonstrated significantly better than the thick nanorods prepared at a high calcined temperature. The mechanism was attributed to the nonstoichiometric ratio of Sn/O and larger surface area of the gracile nanorods to enhance the oxygen surface adsorption.
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