Room-temperature solid state synthesis of ZnO/α-Fe 2O 3 hierarchical nanostructures and their enhanced gas-sensing properties

Limei Huang, Huiqing Fan

科研成果: 期刊稿件文章同行评审

74 引用 (Scopus)

摘要

A facile solid state reaction route was employed to synthesize the ZnO/α-Fe 2O 3 hierarchical nanostructures by grinding zinc acetate, α-Fe 2O 3 and sodium hydroxide with proper molar ratios together at room temperatures without any surfactant and template. Their morphological feature was characterized as self-assembled by nanosheets on which α-Fe 2O 3 nanoparticles were well sprinkled, and it was observed that the amount of α-Fe 2O 3 added significantly affected the overall morphology. Furthermore, gas-sensing properties of the obtained products were studied. The results demonstrated that the sensors based on ZnO/α-Fe 2O 3 hierarchical nanostructures exhibited a much higher sensitivity to ethanol vapor than the sensors based on pure ZnO nanostructures and the 2% α-Fe 2O 3-added ZnO/α-Fe 2O 3 nanostructures sensors showed the highest sensitivity. Additionally, the mechanism of gas sensing was also studied.

源语言英语
页(从-至)1257-1263
页数7
期刊Sensors and Actuators, B: Chemical
171-172
DOI
出版状态已出版 - 8月 2012

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