title: Microstructure and gas-sensing property of the ordered mesoporous Co3O4.
abstract: We report the microstructure, gas-sensing properties of the ordered mesoporous Co3O4 prepared by modified KIT-6 template method. Highly ordered mesoporous nanostructures of the as-prepared products have been characterized by X-ray diffraction (XRD), extended X-ray absorption fine structure (EXAFS), high-resolution transmission electron microscopy (HRTEM) and N2 adsorption/desorption analysis. We find that the ordered mesoporous Co3O4 enables a significant improvement of sensor response and selectivity to ethanol, which demonstrates the potential use of the ordered mesoporous Co3O4 as alcohol gas-sensing material. Through the analysis of microstructure including HRTEM and N2 adsorption/desorption, the sensing properties for the ordered mesoporous Co3O4 can be attributed qualitatively to its large specific surface area and porous morphology. Moreover, the results of EXAFS illustrate that the disorder degree and unsaturated bond of the ordered mesoporous Co3O4 increase, which agree well with the results observed in gas sensors. This makes the nanostructured ordered mesoporous Co3O4 a promising sensor material for detecting the alcohol gas.
authors: School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, PR China.
authors: Maixia
authors: M
authors: Ma
authors: Zhiyun
authors: Z
authors: Pan
authors: Weijie
authors: W
authors: Wang
authors: Lin
authors: L
authors: Guo
authors: Jinghong
authors: J
authors: Li
authors: Ziyu
authors: Z
authors: Wu
authors: Shihe
authors: S
authors: Yang