期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 254, 期 -, 页码 1242-1248出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.07.084
关键词
Al-doped ZnO nanoparticles; 2-Chloroethyl ethyl sulfide; Rapid response time; Gas sensor
资金
- Agency for Defense Development (ADD) of the Republic of Korea and Priority Research Centers Program through the National Research Foundation of Korea (NRF) [2009-0093823]
- Korea Ministry of Environment as Convergence Technology Program [2015001650001]
In this work, we report the gas sensing properties of un-doped and M (M = Al, Co, Cu, Mn)-doped ZnO nanoparticles (NPs), synthesized by a hydrothermal method for the detection of 2-chloroethyl ethyl sulfide (2-CEES), as a mustard simulant. X-ray diffraction and X-ray photoelectron spectroscopy characterizations reveal that Al-doped ZnO NPs were successfully fabricated. The sensing response of 1 at% Al-doped ZnO NPs was found to be the maximum (R = 954.2) at 500 degrees C, owing to enhanced conductivity and concentration of the oxygen vacancies after Al doping. Al is a more effective dopant for ZnO NPs toward enhancing its sensing properties for the detection of 2-CEES than Cu, Co, or Mn. The Al-doped ZnO NPs are both sensitive and selective to 2-CEES. The sensing performance of these NPs for 2-CEES is approximately 15 times better than the ones reported previously for other types of NPs. (C) 2017 Elsevier B.V. All rights reserved.
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