PPV Nanotube Sensor Arrays for Explosives Identification by Excitation Wavelength Regulation |
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| Authors: | Xianbang Liu Yongkang Hu Yuting Zhou Peng Zhang Li Gao Bingxin Liu Zhaofeng Wu Lei Zhang |
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| Affiliation: | 1. Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining, 810016 China;2. School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan, 430074 China;3. School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang, 830046 China;4. Department of Mechanical Engineering, University of Alaska Fairbanks, PO Box 755905, Fairbanks, AK, 99775-5905 USA |
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| Abstract: | The development of sensitive materials for standard and improvised explosives is greatly significant to homeland security. In this paper, the phosphotungstate (NaPT) doped polyphenylene vinylene (PPV) nanotube arrays (NTAs), with excellent optical response, chemical stability, and larger specific surface area, are successfully fabricated by means of the “precursor film” infiltration method. The efficient charge carriers' separation of PPV NTAs can be achieved by doping NaPT to realize the photoelectric detection of explosive vapors. In addition, the identification of six explosives, including ammonium nitrate (AN), dinitrotoluence (DNT), picric acid (PA), p-nitrotoluene (PNT), triacetone triperoxide (TATP), and trinitrotoluene (TNT), can also be realized through the fingerprint atlas. Moreover, the adsorption energy and excited oscillator intensity has also been employed to explain the interaction between NaPT doped PPV nanotube arrays and various explosive molecules. Obviously, the NaPT doped PPV developed has the potential to be used as an explosive sensor. |
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| Keywords: | explosives vapor fingerprint atlas nanotube arrays NaPT PPV |
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