Efficient Gas-Sensing for Formaldehyde with 3D Hierarchical Co3O4 Derived from Co5-Based MOF Microcrystals
Autor: | Qiao Xiuqing, Wei Zhou, Hou Dongfang, Dongsheng Li, Jun Zhao, Wen-Wen Dong, Ya-Pan Wu, Xianhui Bu |
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Rok vydání: | 2017 |
Předmět: |
Detection limit
Nanostructure Formaldehyde Oxide Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Inorganic Chemistry Metal chemistry.chemical_compound chemistry Chemical engineering Operating temperature law visual_art visual_art.visual_art_medium Calcination Physical and Theoretical Chemistry 0210 nano-technology Porosity |
Zdroj: | Inorganic Chemistry. 56:14111-14117 |
ISSN: | 1520-510X 0020-1669 |
Popis: | Detecting formaldehyde at low operating temperature and maintaining long-term stability are of great significance. In this work, a hierarchical Co3O4 nanostructure has been fabricated by calcining Co5-based metal–organic framework (MOF) microcrystals. Co3O4-350 particles were used for efficient gas-sensing for the detecting of formaldehyde vapor at lower working temperature (170 °C), low detection limit of 10 ppm, and long-term stability (30 days), which not only is the optimal value among all reported pure Co3O4 sensing materials for the detection of formaldehyde but also is superior to that of majority of Co3O4-based composites. Such extraordinarily efficient properties might be resulted from hierarchically structures, larger surface area and unique pore structure. This strategy is further confirmed that MOFs, especially Co-clusters MOFs, could be used as precursor to synthesize 3D nanostructure metal oxide materials with high-performance, which possess high porosity and more active sites and shorter io... |
Databáze: | OpenAIRE |
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