Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 780, Issue -, Pages 228-236Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.11.320
Keywords
Zn2SnO4; Semiconductors; Electrospinning; UV irradiation; Sensors
Categories
Funding
- National Natural Science Foundation of China [11574189, 11604196, 11604252]
- Science and Technology Program of Shaanxi Province [2016KJXX-15, 2017JQ1038, 2017JQ1015]
- Fundamental Research Funds for the Central Universities [GK201602006, GK201801005, 2018CBLZ002]
- Start-Up Funds of Xi'an Polytechnic University [BS15026]
- National Demonstration Center for Experimental Xphysics Education of Shaanxi Normal University
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Porous ternary Zn2SnO4 nanofibers with a high surface-to-volume ratio were fabricated through an electrospinning technique. UV-activated ethanol sensing responses at low temperatures were revealed using these porous Zn2SnO4 nanofibers as a sensing active layer. The ethanol response was up to 32.5, and the calculated detection limit was as low as 1.6 ppm at a low temperature of 130 degrees C. The sensor exhibited good ethanol selectivity and stability under UV irradiation. The photoinduced electrons reacted with the absorbed oxygen molecules to form active O- species [O-(hv)], which contributed to the enhanced resistance modulation and low-temperature ethanol response of Zn2SnO4 nanofibers. (C) 2018 Elsevier B.V. All rights reserved.
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