%0 Journal Article
%T Excellent Methanol Sensing Performance of Gas Sensor Based on Ag-LaFeO3 Modified with Graphene | Insight Medical Publishing
%A Hu JC
%A Liu QJ
%A Rong Q
%A Zhang J
%A Zhang YM
%A Zhu ZQ
%A Zi BY
%J Journal of Molecular science
%D 2018
%X Ag-LaFeO3 (ALFO) was prepared using a sol-gel method combined with the microwave chemical synthesis. The ALFO were further modified by graphene (G-ALFO) with different weight ratio (0.50%, 0.75% and 1.00%). The composite material of G-ALFO was characterized using X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FT-IR) and Raman spectrum to examine the morphology, microstructure and surface area. The 0.75% G-ALFO (0.75% are the weight ratio of G to ALFO) shows excellent selectivity and good response to methanol. The responses to 5 ppm methanol and the optimal operating temperature of 0.75% G-ALFO are 51 and 102¡ãC, and a lower response (¡Ü 15) to other test gases including formaldehyde, acetone, ethanol, ammonia, gasoline and benzene was measured, respectively. The results showed that the 0.75% G-ALFO composite possesses high response, low operating temperature and good selectivity to methanol.
%U http://www.imedpub.com/articles/excellent-methanol-sensing-performance-of-gas-sensor-based-on-aglafeo3-modified-with-graphene.php?aid=21628