A high selective methanol gas sensor based on molecular imprinted Ag-LaFeO(3) fibers.

A high selective methanol gas sensor based on molecular imprinted Ag-LaFeO(3) fibers.
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基于分子印迹Ag-LaFeO3纤维的高选择性甲醇气体传感器

DOI:
10.1038/s41598-017-12337-z
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发表时间:
2017-09-21
期刊:
影响因子:
4.6
通讯作者:
Liu Q
Liu Q
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Rong Q;Zhang Y;Wang C;Zhu Z;Zhang J;Liu Q

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制备了Ag-LaFeO 3分子印迹聚合物(ALMIPs),该聚合物对甲醇具有特异的识别位点。然后分别以滤纸、蚕丝和碳纤维为模板制备了ALMIPs纤维1、纤维2和纤维3。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和氮吸附比表面积分析仪(BET)对纤维的结构、形貌和比表面积进行了表征。ALMIPs纤维(纤维1、纤维2和纤维3)对甲醇显示出优异的选择性和良好的响应。对5 ppm甲醇的响应和ALMIPs纤维的最佳操作温度分别为23.5和175 °C(纤维1)、19.67和125 °C(纤维2)、17.59和125 °C(纤维3),并且分别测量到对包括甲醛、丙酮、乙醇、氨、汽油和苯的其它测试气体的较低响应(≤10,3,2)。
Ag-LaFeO3 molecularly imprinted polymers (ALMIPs) were fabricated, which provided special recognition sites to methanol. Then ALMIPs fiber 1, fiber 2 and fiber 3 were prepared using filter paper, silk and carbon fibers template, respectively. Based on the observation of X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and Nitrogen adsorption surface area analyzer (BET), the structure, morphology and surface area of the fibers were characterized. The ALMIPs fibers (fiber 1, fiber 2 and fiber 3) show excellent selectivity and good response to methanol. The responses to 5 ppm methanol and the optimal operating temperature of ALMIPs fibers are 23.5 and 175 °C (fiber 1), 19.67 and 125 °C (fiber 2), 17.59 and 125 °C (fiber 3), and a lower response (≤10, 3, 2) to other test gases including formaldehyde, acetone, ethanol, ammonia, gasoline and benzene was measured, respectively.
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