Gas response enhancement of VOCs sensor based on Sn doped nanoporous anatase TiO2 nanoparticles at a relative low operating temperature

Gas response enhancement of VOCs sensor based on Sn doped nanoporous anatase TiO2 nanoparticles at a relative low operating temperature
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基于 Sn 掺杂纳米多孔锐钛矿 TiO2 纳米粒子的 VOCs 传感器在较低工作温度下的气体响应增强

DOI:
10.1088/2053-1591/ab3516
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发表时间:
2019-08
影响因子:
2.3
通讯作者:
Yude Wang
Yude Wang
中科院分区:
材料科学4区
文献类型:
--
作者:
Xu Zhang;Sijia Peng;Ping Hong;Rongjun Zhao;Yue Yang;Xinxin Xing;Yude Wang

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本文采用水热法在不添加表面活性剂和模板剂的情况下制备了Sn掺杂纳米多孔TiO 2纳米粒子。采用多种技术分析了合成样品的结构、形貌和比表面积。研究了在不同工作温度下,丙酮、乙醇、正丁醇和二甲苯等挥发性有机物在不同浓度下的传感器响应特性。在240 °C的工作温度下,传感器具有良好的响应性、线性相关性、重复性和长期稳定性。特别是,2.5%Sn/TiO 2纳米颗粒显示出高的气体响应,对100 ppm VOC的响应最高(21.19)。这些值证明了2.5%Sn/TiO 2纳米颗粒用于VOCs检测的潜在应用。此外,还对提高其性能的机理进行了研究和探讨。
In this paper, Sn-doped nanoporous anatase TiO2 nanoparticles were prepared via a hydrothermal method without surfactant or template modification. Various techniques were used to analyze the structure, morphology and specific surface area of the as-synthesized samples. The sensor responses for volatile organic compounds (acetone, ethanol, n-butanol and xylene) at the various concentrations under the different operating temperatures were studied. Under the operating temperature of 240 °C, the sensor has good response, linear correlation, repeatability and long-term stability. In particular, the 2.5% Sn/TiO2 nanoparticles show a high gas response with the highest response to 100 ppm VOCs (21.19). These values demonstrate the potential application of 2.5% Sn/TiO2 nanoparticles for VOCs detection. In addition, the mechanism related to advanced performance was studied and proposed.
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