期刊
MATERIALS RESEARCH BULLETIN
卷 111, 期 -, 页码 320-328出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2018.11.040
关键词
Ag-LaFeO3 nanopartides; Gas sensor; Molecular imprinting technique; Microwave-assisted synthesis
资金
- National Natural Science Foundation of China [51562038]
- Yunnan basic applied research project [2017FB086]
- key Project of Natural Science Foundation of Yunnan [2018FY001 (-011)]
Highly sensitive and selective detection against toluene gas remains a tremendous challenge in gas sensor applications. In this work, a series of molecular imprinted Ag-LaFeO3 nanoparticles (IAL NPs) were synthesized in a microwave-assisted colloidal route. Especially, the one prepared with optimal amount of imprint molecules (IAL-2 NPs) have a response of 24.0 to 5 ppm toluene at the optimum working temperature of 215 degrees C with negligible responses to the other test gases, exhibiting enhanced gas sensing properties for toluene gas at a relatively low working temperature. The improved performance can be attributed to the favorable effect of microwave radiation, the molecular imprinting structure and the sensitization of Ag, which illuminates that IAL-2 NPs is a potential candidate for toluene detection.
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