Enhanced acetone sensing performance of Au nanoparticles functionalized flower-like ZnO

ZnO flowers functionalized by Au nanoparticles (NPs) with various Au contents have been developed. The gas sensing properties of the sensors fabricated from these materials were examined and compared at varied working temperatures. Improved sensor response, selectivity and short response and recover...

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Bibliographic Details
Published inSensors and actuators. B, Chemical Vol. 168; pp. 39 - 45
Main Authors Wang, Xin-jun, Wang, Wei, Liu, Yan-Li
Format Journal Article
LanguageEnglish
Published Elsevier B.V 20.06.2012
Subjects
Acetone
Actuators
Au nanoparticles
Flower-like ZnO
Flowers
Gas sensors
Gold
Hybrid
nanogold
Nanoparticles
Semiconductor gas sensor
Sensors
temperature
vapors
Zinc oxide
Hybrid
Flower-like ZnO
Au nanoparticles
Semiconductor gas sensor
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Summary:ZnO flowers functionalized by Au nanoparticles (NPs) with various Au contents have been developed. The gas sensing properties of the sensors fabricated from these materials were examined and compared at varied working temperatures. Improved sensor response, selectivity and short response and recovery times to acetone vapor were achieved by suitably modulating the weight percent of Au NPs. Experimentally, the formation of Au/ZnO hybrids and surface coarsening of ZnO flowers were found to lead to apparent further enhancement of the sensor performance.
Bibliography:http://dx.doi.org/10.1016/j.snb.2012.01.006
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ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2012.01.006