期刊
SENSORS AND ACTUATORS A-PHYSICAL
卷 283, 期 -, 页码 128-133出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2018.09.063
关键词
Reduced graphene oxide; Core-shell; Heterojunction; Synergistic effect
资金
- Startup Funding of Distinguished Professorship of 1000 Talent program [3127008696100100]
- Taishan Scholar Program [11370085961006]
- Shandong Provincial Science and Technology Major Project [2016GGX104001, 2017CXGC1010, ZR2017MEM002, 2018JMRH0211]
- National Science Foundation of Shandong Province [ZR2017BEM049]
- China Postdoctoral Science Foundation [2017M612265]
Selective noxious gas sensing at low temperature is very important in some industrial applications. Here, we demonstrate that the reduced graphene oxide (RGO) wrapped Au@ZnO core-shell composite can be fabricated in wafer-level and used as the key sensor materials for triethylamine sensing with a high response of 12.2% for 5 ppm of TEA gas at a low temperature (50 degrees C). The sensitivity of RGO/Au/ZnO sensor to TEA gas achieved almost 6 times higher than that of ethanol and acetone, 5 times that of methanol and isopropanol, and 3 times that of ammonia. The selective sensing properties are largely attributed to the synergistic effect of the core-shell structure and the ZnO/RGO heterojunctions. This work provides a significant strategy for TEA gas sensor selective sensing arrays application at low temperatures. (C) 2018 Elsevier B.V. All rights reserved.
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