A high selective methanol gas sensor based on molecular imprinted Ag-LaFeO3 fibers

作者：Rong, Qian; Zhang, Yumin; Wang, Chao; Zhu, Zhongqi; Zhang, Jin^*; Liu, Qingju^*

来源：Scientific Reports, 2017, 7(1): 12110.

DOI：10.1038/s41598-017-12337-z

• SENSING PROPERTIES
• ASSISTED SYNTHESIS
• THIN-FILMS
• FORMALDEHYDE
• PERFORMANCE
• NANOPARTICLES
• NANOFIBERS
• NANOTUBES
• TEMPLATE
• GROWTH

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 degrees C (fiber 1), 19.67 and 125 degrees C (fiber 2), 17.59 and 125 degrees 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.

• 出版日期2017-9-21
• 单位云南大学