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Reference type: Journal
Authors: Rong Q, Zhang YM, Lv TP, Shen KY, Zi BY, Zhu ZQ, Zhang J, Liu QJ
Article Title: Highly selective and sensitive methanol gas sensor based on molecular imprinted silver-doped LaFeO3 core-shell and cage structures.
Publication date: 2018
Journal: Nanotechnology
Volume: 29
Issue: (14)
Page numbers: ArticleNo145503.
Alternative URL: http://stacks.iop.org/0957-4484/29/i=14/a=145503

Abstract: Silver-doped LaFeO3 molecularly imprinted polymers (SLMIPs) were synthesized by a sol gel method combined with molecularly imprinted technology (MIT) as precursors. The precursors were then used to prepare SLMIPs cage (SLM-cage) and SLMIPs core-shell (SLM-core-shell) structures by using a carbon sphere as template and hydrothermal synthesis, respectively. The structures, morphologies, and surface areas of these materials were determined, as well as their gas-sensing properties and related mechanisms. The SLM-cage and SLM-core-shell samples exhibited good responses to methanol gas, with excellent selectivity. The response and optimum working temperature respectively are 16.98 and 215 C, 33.7 and 195 C, respectively, with corresponding response and recovery times of 45 s and 50 s (SLM-cage) and 42 s and 57 s (SLM-core-shell) for 5 ppm methanol gas. Notably, the SLM-cage and SLM-core-shell samples exhibited lower responses ( 5 and 7, respectively) to other gases, including ethanol, ammonia, benzene, acetone, and toluene. Thus, these materials show potential as practical methanol detectors
Template and target information: methanol


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