期刊
ELECTRONICS LETTERS
卷 51, 期 7, 页码 572-573出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/el.2014.4513
关键词
-
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2014R1A2A2A01002668]
Fabrication and evaluation of Ag nanoparticles (NPs)-loaded hierarchical ZnO nanostructure (Ag/ZnO) and their acetylene (C2H2) gas sensing properties have been studied. Physical and structural characterisations reveal the formation of high-purity, standard crystalline hierarchical ZnO nanostructures and Ag/ZnO composites. Gas sensing characteristics of the synthesised materials were carried out within the temperature range 25-300 degrees C at different C2H2 gas concentrations. At an optimum temperature of 200 degrees C, 5 wt% Ag/ZnO composite showed preferable detection of C2H2 with a high sensor response of 92% (1000 ppm), low limit of detection (LOD) of 5 ppm and excellent selectivity towards reducing/oxidising gases. Experimental results demonstrated that addition of appropriate amounts of Ag to ZnO nanostructures enhanced the C2H2 sensing performance, which suggests the possibility of fabrication and development of high-performance C2H2 sensors.
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