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Nickel/iron-based bimetallic MOF-derived nickel ferrite materials for triethylamine sensing
CrystEngComm ( IF 2.6 ) Pub Date : 2020/01/13 , DOI: 10.1039/c9ce01807g Chengbo Zhai 1, 2, 3, 4 , Hongpeng Zhang 1, 2, 3, 4 , Liyong Du 1, 2, 3, 4 , Dongxue Wang 1, 2, 3, 4 , Dejun Xing 4, 5, 6, 7 , Mingzhe Zhang 1, 2, 3, 4
CrystEngComm ( IF 2.6 ) Pub Date : 2020/01/13 , DOI: 10.1039/c9ce01807g Chengbo Zhai 1, 2, 3, 4 , Hongpeng Zhang 1, 2, 3, 4 , Liyong Du 1, 2, 3, 4 , Dongxue Wang 1, 2, 3, 4 , Dejun Xing 4, 5, 6, 7 , Mingzhe Zhang 1, 2, 3, 4
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Nowadays, metal–organic framework (MOF) based oxides have been gradually regarded as promising gas-sensing materials. In this study, the small-sized NiFe2O4 polyhedrons were first synthesized through the pyrolysis of Fe/Ni-based bimetallic MOF precursors that were synthesized by ligand acid complexation. Subsequently, large-sized NFO polyhedrons with more stable morphology and structure were synthesized by changing the solvent composition. The concrete microstructure of the as-synthesized samples was characterized by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy and high-resolution transmission electron microscopy. The large-sized NFO polyhedron based sensors present satisfactory triethylamine (TEA) gas sensing performance, such as fast response speed (6 s to 50 ppm TEA), enhanced response values (18.9 to 50 ppm TEA), good selectivity and repeatability at a relatively low working temperature (190 °C). Only a few studies have reported on the use of MOF-derived NFO materials in TEA detection. Hence, our work expands the application of MOF-derived NFO materials. In addition, the sensing performance and sensing mechanism are discussed in detail.
中文翻译：
用于三乙胺传感的镍/铁基双金属MOF镍铁氧体材料
如今，基于金属-有机骨架（MOF）的氧化物已逐渐被视为有前途的气体传感材料。在本研究中，小型NiFe 2 O 4多面体首先通过对Fe / Ni基双金属MOF前驱体进行热解而合成，后者是通过配体酸络合而合成的。随后，通过改变溶剂组成，合成了形态和结构更稳定的大型NFO多面体。通过X射线衍射，扫描电子显微镜，透射电子显微镜和高分辨率透射电子显微镜对所合成样品的混凝土微观结构进行表征。基于大型NFO多面体的传感器具有令人满意的三乙胺（TEA）气体感测性能，例如响应速度快（6 s至50 ppm TEA），增强的响应值（18.9至50 ppm TEA），相对较高的选择性和可重复性工作温度低（190°C）。仅有少数研究报道了将MOF衍生的NFO材料用于TEA检测。因此，我们的工作扩展了MOF衍生的NFO材料的应用。另外，详细讨论了感测性能和感测机制。
更新日期：2020-02-17
中文翻译：
用于三乙胺传感的镍/铁基双金属MOF镍铁氧体材料
如今，基于金属-有机骨架（MOF）的氧化物已逐渐被视为有前途的气体传感材料。在本研究中，小型NiFe 2 O 4多面体首先通过对Fe / Ni基双金属MOF前驱体进行热解而合成，后者是通过配体酸络合而合成的。随后，通过改变溶剂组成，合成了形态和结构更稳定的大型NFO多面体。通过X射线衍射，扫描电子显微镜，透射电子显微镜和高分辨率透射电子显微镜对所合成样品的混凝土微观结构进行表征。基于大型NFO多面体的传感器具有令人满意的三乙胺（TEA）气体感测性能，例如响应速度快（6 s至50 ppm TEA），增强的响应值（18.9至50 ppm TEA），相对较高的选择性和可重复性工作温度低（190°C）。仅有少数研究报道了将MOF衍生的NFO材料用于TEA检测。因此，我们的工作扩展了MOF衍生的NFO材料的应用。另外，详细讨论了感测性能和感测机制。
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