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Large‐Scale Synthesis of a Porous Co 3 O 4 Nanostructure and Its Application in Metastable Intermolecular Composites
Author(s) -
Wang Jun,
Qiao Zhiqiang,
Shen Jinpeng,
Li Rui,
Yang Yuntao,
Yang Guangcheng
Publication year - 2015
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201400251
Subject(s) - materials science , nanostructure , silicon , exothermic reaction , chemical engineering , nanotechnology , hydrothermal circulation , porosity , annealing (glass) , porous silicon , scanning electron microscope , substrate (aquarium) , metastability , field emission microscopy , composite material , diffraction , optoelectronics , chemistry , oceanography , physics , organic chemistry , optics , geology , engineering
Three‐dimensional nanostructured porous Co 3 O 4 was synthesized on a silicon substrate via a hydrothermal route in conjunction with annealing treatment. The structure and morphology of the obtained Co 3 O 4 samples were systemically examined using field‐emission scanning electron microscopy and X‐ray diffraction. The Co 3 O 4 structures were composed of nanosheets forming a pore‐network architecture that promoted Al penetration into its inner regions during deposition resulting in enhanced interfacial contact area, which significantly improve metastable intermolecular composites (MICs) burning rate and the release of energy. The successfully Co 3 O 4 was used to synthesize Al/Co 3 O 4 based MICs by integration with nano‐Al deposited via thermal evaporation. The heat of reaction of Al/Co 3 O 4 , particularly the exothermic reaction before Al melting, was greatly enhanced by the Co 3 O 4 nanostructures. The Al/Co 3 O 4 based MICs were fabricated on a silicon substrate, which is very convenient for integrating MICs with silicon‐based microelectromechanical systems to achieve functional nanoenergetics‐on‐a‐chip.