期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 184, 期 -, 页码 288-294出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.04.085
关键词
Sn1-xCoxO2; Magnetic property; Gas sensing
资金
- SRFDP [20110191110034]
- Innovative Talent Funds for 985 Project [WLYJSBJRCTD201101]
- NSFCQ [cstc2012jjB0006]
- NSFDYS [50925205]
- large-scale equipment sharing fund of Chongqing University
Sn1-xCoxO2 (x = 0, 0.01, 0.03, 0.05, 0.07) nanostructures with different morphologies are prepared by a facile hydrothermal method. The analysis from X-ray photoelectron spectroscopy indicates that the cobalt doped in SnO2 exists as Co2+. The room-temperature ferromagnetism is observed in the powder sample of Sn1-xCoxO2 with x = 0.01. The magnetic hysteresis loop is observed at room temperature with coercivity (Hc) of 120 Oe and remanent magnetization (Mr) of 3.04 x 10(-2) emu/g. UV-vis spectra reveal the red shift of the band edge absorption of SnO2 after being doped with Co. The application of Sn1-xCoxO2 nanostructures in the gas sensor for detecting ethanol and acetone reveals that the as-prepared Sn1-xCoxO2 nanourchins with x = 0.03 show a high sensitivity and short response/recovery time. (C) 2013 Elsevier B.V. All rights reserved.
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