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Xylene gas sensor based on Au-loaded WO3 center dot H2O nanocubes with enhanced sensing performance
Li, F.; S. J. Guo; J. L. Shen; L. Shen; D. M. Sun; B. Wang; Y. Chen and S. P. Ruan
2017
发表期刊Sensors and Actuators B-Chemical
卷号238
摘要In this work, Au was employed as an ideal dopant to obtain enhanced sensing performance of xylene gas sensor. Firstly, the as-perpared Au-doped WO3 center dot H2O powder was synthesized by a facile and efficient hydrothermal method. Then various techniques including X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Energy Dispersive X-ray Spectrometer (EDX) were employed to investigate the morphology, microstructure, crystalline nature and chemical compositions of the as-prepared Au-doped WO3 center dot H2O nanomaterials. The morphologies of the nanomaterials could be easily controlled by changing the atomic percentage (at%) of Au (0.15 at%, 0.30 at%, 0.45 at%) in the precursor solutions. And it have been attested that the 0.30 at% Au-doped WO3 center dot H2O-based sensor realized higher gas response of 26.4-5 ppm xylene at 255 degrees C, faster response/recovery speed and stronger selectivity to target gas compared with the unloaded one. Furthermore, the detection limit could be as low as 200 ppb level. Hence, Au-loaded WO3 center dot H2O nanomaterial could be a promising material applied in xylene gas sensor. Also, the mechanism involved in the improving xylene sensing properties of Au/WO3 center dot H2O was discussed. (C) 2016 Elsevier B.V. All rights reserved.
收录类别sci ; ei
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/58993
专题中科院长春光机所知识产出
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GB/T 7714
Li, F.,S. J. Guo,J. L. Shen,et al. Xylene gas sensor based on Au-loaded WO3 center dot H2O nanocubes with enhanced sensing performance[J]. Sensors and Actuators B-Chemical,2017,238.
APA Li, F..,S. J. Guo.,J. L. Shen.,L. Shen.,D. M. Sun.,...&Y. Chen and S. P. Ruan.(2017).Xylene gas sensor based on Au-loaded WO3 center dot H2O nanocubes with enhanced sensing performance.Sensors and Actuators B-Chemical,238.
MLA Li, F.,et al."Xylene gas sensor based on Au-loaded WO3 center dot H2O nanocubes with enhanced sensing performance".Sensors and Actuators B-Chemical 238(2017).
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