التفاصيل البيبلوغرافية
| العنوان: |
Nickel/iron-based bimetallic MOF-derived nickel ferrite materials for triethylamine sensing. |
| المؤلفون: |
Zhai, Chengbo, Zhang, Hongpeng, Du, Liyong, Wang, Dongxue, Xing, Dejun, Zhang, Mingzhe |
| المصدر: |
CrystEngComm; 2/21/2020, Vol. 22 Issue 7, p1286-1293, 8p |
| مصطلحات موضوعية: |
NICKEL ferrite, TRANSMISSION electron microscopy, SCANNING electron microscopy, METAL-organic frameworks, POLYHEDRA |
| مستخلص: |
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. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
