Controlled Synthesis of Hierarchically Assembled Porous ZnO Microspheres with Enhanced Gas-Sensing Properties

The ZnO microspheres constructed by porous nanosheets were successfully synthesized by calcinating zinc hydroxide carbonate (ZHC) microspheres obtained by a sample hydrothermal method. The samples were characterized in detail with scanning electron microscopy (SEM), transmission electron microscopy...

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Published inJournal of nanomaterials Vol. 2015; no. 2015; pp. 1 - 9
Main Authors Sun, Ya-li, Qian, Jing, Song, Haojie, You, Shengsheng, Jia, Xiao-hua
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Publishing Corporation 01.01.2015
Hindawi Limited
Subjects
Chemical vapor deposition
Decomposition
Ethanol
Ethyl alcohol
Gases
Methods
Microscopy
Microspheres
Morphology
Nanomaterials
Nanostructure
Nitrates
Raw materials
Scanning electron microscopy
Science
Sensors
Wurtzite
Zinc
Zinc oxide
Zinc oxides
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Summary:The ZnO microspheres constructed by porous nanosheets were successfully synthesized by calcinating zinc hydroxide carbonate (ZHC) microspheres obtained by a sample hydrothermal method. The samples were characterized in detail with scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and thermogravimetric and differential scanning calorimetry (TG-DSC). The results indicated that the prepared ZnO microspheres were well crystalline with wurtzite hexagonal phase. The effects of reaction time, temperature, the amount of trisodium citrate, and urea on the morphology of ZnO microspheres were studied. The formation mechanism of porous ZnO microspheres was discussed. Furthermore, the gas-sensing properties for detection of organic gas of the prepared porous ZnO microspheres were investigated. The results indicated that the prepared porous ZnO microspheres exhibited high gas-sensing properties for detection of ethanol gas.
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ISSN:1687-4110
1687-4129
DOI:10.1155/2015/680306