title: Facile fabrication and enhanced sensing properties of hierarchically porous CuO architectures.
abstract: Hierarchically porous CuO architectures were successfully fabricated via copper basic carbonate precursor obtained with a facile hydrothermal route. The shape of the precursor is preserved after its conversion to porous CuO architectures by calcination. The obtained CuO are systemically characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and Brunauer-Emmett-Teller N(2) adsorption-desorption analysis. The results reveal that hierarchical CuO microspheres are monoclinic structure and are assembled by porous single-crystal sub-microplatelets. The Brunauer-Emmett-Teller N(2) adsorption-desorption analysis indicates that the obtained CuO has a surface area of 12.0 m(2)/g with pore size of around 30 nm. The gas sensing performance of the as-prepared hierarchical CuO microspheres were investigated towards a series of typical organic solvents and fuels. They exhibit higher sensing response than that of commercial CuO powder. Their sensing properties can be further improved by loading of Ag nanoparticles on them, suggesting their potential applications in gas sensors.
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
authors.forename: Guoxing
authors.initials: G
authors.lastname: Zhu
authors.forename: Huan
authors.initials: H
authors.lastname: Xu
authors.forename: Yunyun
authors.initials: Y
authors.lastname: Xiao
authors.forename: Yuanjun
authors.initials: Y
authors.lastname: Liu
authors.forename: Aihua
authors.initials: A
authors.lastname: Yuan
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Shen