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Transition-Metal-Doped p-Type ZnO Nanoparticle-Based Sensory Array for Instant Discrimination of Explosive Vapors
Qu, J (Qu, Jiang); Ge, YR (Ge, Yuru); Zu, BY (Zu, Baiyi); Li, YX (Li, Yuxiang); Dou, XC (Dou, Xincun); Zu, BY
2016
发表期刊SMALL
卷号12期号:10页码:1369-1377
摘要The development of portable, real-time, and cheap platforms to monitor ultratrace levels of explosives is of great urgence and importance due to the threat of terrorism attacks and the need for homeland security. However, most of the previous chemiresistor sensors for explosive detection are suffering from limited responses and long response time. Here, a transition-metal-doping method is presented to remarkably promote the quantity of the surface defect states and to significantly reduce the charge transfer distance by creating a local charge reservoir layer. Thus, the sensor response is greatly enhanced and the response time is remarkably shortened. The resulting sensory array can not only detect military explosives, such as, TNT, DNT, PNT, PA, and RDX with high response, but also can fully distinguish some of the improvised explosive vapors, such as AN and urea, due to the huge response reaching to 100%. Furthermore, this sensory array can discriminate ppb-level TNT and ppt-level RDX from structurally similar and high-concentration interfering aromatic gases in less than 12 s. Through comparison with the previously reported chemiresistor or Schottky sensors for explosive detection, the present transition-metal-doping method resulting ZnO sensor stands out and undoubtedly challenges the best.
DOI10.1002/smll.201503131
收录类别SCI
WOS记录号WOS:000372008200013
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/4549
专题环境科学与技术研究室
通讯作者Zu, BY
作者单位Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China;Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Qu, J ,Ge, YR ,Zu, BY ,et al. Transition-Metal-Doped p-Type ZnO Nanoparticle-Based Sensory Array for Instant Discrimination of Explosive Vapors[J]. SMALL,2016,12(10):1369-1377.
APA Qu, J ,Ge, YR ,Zu, BY ,Li, YX ,Dou, XC ,&Zu, BY.(2016).Transition-Metal-Doped p-Type ZnO Nanoparticle-Based Sensory Array for Instant Discrimination of Explosive Vapors.SMALL,12(10),1369-1377.
MLA Qu, J ,et al."Transition-Metal-Doped p-Type ZnO Nanoparticle-Based Sensory Array for Instant Discrimination of Explosive Vapors".SMALL 12.10(2016):1369-1377.
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