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- W2070374037 abstract "Hierarchical and hexagonal cobalt oxide with porous structure was synthesized via a precipitation route followed by calcination. The shape and crystal size of cobalt oxide were greatly dependent on the chemicals and calcination temperature. The as-synthesized cobalt oxide reserved the shape of its hydroxide precursor. The calcination temperature was a key factor for controlling the pore volume and crystal sizes of as-prepared Co3O4 samples. The cobalt oxide prepared under different conditions was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and nitrogen physisorption analysis. The gas-sensing properties were measured by a gas sensor measurement system using Co3O4 samples as a sensor material. The influence of gas concentrations, specific surface area and crystals size of Co3O4 on sensing properties were investigated. The porous hierarchical cobalt oxide with a small crystal size and high surface area showed a high response to ethanol vapor, while cobalt oxide platelets with a large crystal size and macropore exhibited a high response to acetone vapor." @default.
- W2070374037 created "2016-06-24" @default.
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- W2070374037 date "2015-01-01" @default.
- W2070374037 modified "2023-09-26" @default.
- W2070374037 title "Shape-regulated synthesis of cobalt oxide and its gas-sensing property" @default.
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- W2070374037 doi "https://doi.org/10.1016/j.jallcom.2014.09.020" @default.
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