Rong Qian, Zhang Yumin, Wang Chao, Zhu Zhongqi, Zhang Jin, Liu Qingju
School of Materials Science and Engineering, Yunnan Key Laboratory for Micro/nano Materials & Technology, Yunnan University, 650091, Kunming, China.
Sci Rep. 2017 Sep 21;7(1):12110. doi: 10.1038/s41598-017-12337-z.
Ag-LaFeO 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.
制备了Ag-LaFeO分子印迹聚合物（ALMIPs），其为甲醇提供了特殊的识别位点。然后分别使用滤纸、丝绸和碳纤维模板制备了ALMIPs纤维1、纤维2和纤维3。基于X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和氮吸附表面积分析仪（BET）的观察，对纤维的结构、形态和表面积进行了表征。ALMIPs纤维（纤维1、纤维2和纤维3）对甲醇表现出优异的选择性和良好的响应。对5 ppm甲醇的响应以及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、汽油和苯在内的其他测试气体的响应较低（≤10、3、2）。
