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Sensors 2015, 15(6), 14230-14240; doi:10.3390/s150614230

Synthesis and Gas Sensing Properties of Single La-Doped SnO2 Nanobelts

Institute of Physics and Electronic Information Technology, Yunnan Normal University, Kunming 650500, China
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Academic Editor: W. Rudolf Seitz
Received: 12 April 2015 / Accepted: 3 June 2015 / Published: 16 June 2015
(This article belongs to the Section Chemical Sensors)
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Abstract

Single crystal SnO2 nanobelts (SnO2 NBs) and La-SnO2 nanobelts (La-SnO2 NBs) were synthesized by thermal evaporation. Both a single SnO2 NB sensor and a single La-SnO2 NB sensor were developed and their sensing properties were investigated. It is found that the single La-SnO2 NB sensor had a high sensitivity of 8.76 to ethanediol at a concentration of 100 ppm at 230 °C, which is the highest sensitivity of a single SnO2 NB to ethanediol among three kinds of volatile organic (VOC) liquids studied, including ethanediol, ethanol, and acetone. The La-SnO2 NBs sensor also exhibits a high sensitivity, good selectivity and long-term stability with prompt response time to ethanediol. The mechanism behind the enhanced sensing performance of La-doped SnO2 nanobelts is discussed. View Full-Text
Keywords: La-doped SnO2 nanobelts; single nanobelt; gas sensor; ethanediol La-doped SnO2 nanobelts; single nanobelt; gas sensor; ethanediol
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wu, Y.; Zhang, H.; Liu, Y.; Chen, W.; Ma, J.; Li, S.; Qin, Z. Synthesis and Gas Sensing Properties of Single La-Doped SnO2 Nanobelts. Sensors 2015, 15, 14230-14240.

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