期刊
CERAMICS INTERNATIONAL
卷 41, 期 9, 页码 11004-11012出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.05.045
关键词
Flash synthesis; Porous material; Co3O4; Sensing performance; Volatile organic compounds
资金
- National Natural Science Foundation of China [51262029]
- Key Project of the Department of Education of Yunnan Province [ZD2013006]
- Program for Excellent Young Talents, Yunnan University [XT412003]
- Department of Science and Technology of Yunnan Province via the Key Project for the Science and Technology [2011FA001]
Meso- and macroporous coral-like Co3O4 was synthesized via a facile self-sustained decomposition using the complexes of metallic salts and organics (metal-organic complexes). Porous Co3O4 material was characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and X-ray photoelectron spectrum (XPS) to examine the morphology and microstructure to find out the cause. Co3O4 with the meso- and macroporous structure consisting of nanoparticles has a coral-like shape with a size of tens of micrometers and exhibits the hierarchically porous morphology, in which the walls of the macropores contain smaller mesopores. The gas-sensing characteristics of the porous Co3O4 for volatile organic compounds (VOCs) were investigated. The gas response to 1000 ppm n-butanol reaches a maximum of 27.7 at an operating temperature of 120 degrees C, and about five tithes of the Co3O4 particles. The porous Co3O4 also exhibits certain selectivity and response/recovery time. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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