期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 258, 期 -, 页码 1215-1222出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.12.018
关键词
Yolk-shell microspheres; LaFeO3; Facile hydrothermal method; Acetone sensing; Gas sensor
资金
- National Key Research and Development Program of China [2016YFC0207300]
- National Nature Science Foundation of China [61503148, 61520106003, 61327804]
- National High-Tech Research and Development Program of China (863 Program) [2014AA06A505]
- Science and Technology Development Program of Jilin Province [20170520162JH]
- China Postdoctoral Science Foundation funded project [2017T100208, 2015M580247]
A facile hydrothermal route with the subsequent annealing and chemical etching process to the synthesis of yolk-shell LaFeO3 microspheres without any template is described. Transmission electron microscopy (TEM) images of the products obtained at different hydrothermal reaction time revealed the formation mechanism of yolk-shell LaFeO3 microspheres. Gas sensing devices were fabricated from the as-prepared samples, and their gas sensing properties were tested for response to various reducing gases. The sensor based on yolk-shell LaFeO3 microspheres exhibited high response and good selectivity toward acetone at 225 degrees C, giving a response of 25.5-100 ppm. (C) 2017 Published by Elsevier B.V.
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