Study on preparation and gas sensing property of water-soluble polyaniline/SmBaCuMO_(5+δ)(M=Fe, Co, Ni) for NH_3

作     者：郝红霞 刘瑞泉 HAO Hongxia;LIU Ruiquan

作者机构：College of Chemistry and Chemical Engineering Xinjiang University 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2014年第32卷第1期

页      面：23-28页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：Project supported by National Natural Science Foundation of China(21264015) 

主　　题：gas sensor water-soluble polyaniline/SrnBaCuMOs+δ (M=Fe, Co, Ni) room temperature sensitivity to NH3 rare earths 

摘      要：Water-soluble polyaniline （PANI）, prepared by chemical-oxide and SmBaCuMO5＋δ（M=Fe, Co, Ni）（SBCM） powders, pre-pared by sol-gel method were analyzed through Fourier transform infrared spectroscopy （FT-IR） spectra, X-ray diffraction （XRD）, transmission electron microscopy （TEM） and energy dispersive spectroscopy （EDS） respectively, so as to investigate the gas sensi-tivities of PANI/SmBaCuFeO5＋δ（SBCF） and its sensitivity to NH3 under room temperature. The results showed that all of SBCM powders were of double-perovskite structure and PANI was successfully obtained. Under the same condition, the gas sensor based on PANI/SmBaCuFeO5＋δ（SBCF） material exhibited higher resistance sensitivity, better selectivity and shorter response-recovery time than others. The resistance sensitivities to NH3 increased with the increasing of atom radius of M in PANI/SBCM.