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Efficient Gas-Sensing for Formaldehyde with 3D Hierarchical Co3O4 Derived from Co5-Based MOF Microcrystals

Authors :
Qiao Xiuqing
Wei Zhou
Hou Dongfang
Dongsheng Li
Jun Zhao
Wen-Wen Dong
Ya-Pan Wu
Xianhui Bu
Source :
Inorganic Chemistry. 56:14111-14117
Publication Year :
2017
Publisher :
American Chemical Society (ACS), 2017.

Abstract

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...

Details

ISSN :
1520510X and 00201669
Volume :
56
Database :
OpenAIRE
Journal :
Inorganic Chemistry
Accession number :
edsair.doi...........c0810beaa8a0b9735c4bcf1a488ad9a3