title: Ultrasensitive, Real-time and Discriminative Detection of Improvised Explosives by Chemiresistive Thin-film Sensory Array of Mn(2+) Tailored Hierarchical ZnS.
abstract: A simple method combing Mn(2+) doping with a hierarchical structure was developed for the improvement of thin-film sensors and efficient detection of the explosives relevant to improvised explosive devices (IEDs). ZnS hierarchical nanospheres (HNs) were prepared via a solution-based route and their sensing performances were manipulated by Mn(2+) doping. The responses of the sensors based on ZnS HNs towards 8 explosives generally increase firstly and then decrease with the increase of the doped Mn(2+) concentration, reaching the climate at 5% Mn(2+). Furthermore, the sensory array based on ZnS HNs with different doping levels achieved the sensitive and discriminative detection of 6 analytes relevant to IEDs and 2 military explosives in less than 5 s at room temperature. Importantly, the superior sensing performances make ZnS HNs material interesting in the field of chemiresistive sensors, and this simple method could be a very promising strategy to put the sensors based on thin-films of one-dimensional (1D) nanostructures into practical IEDs detection.
authors.affiliation: School of Life Science and Biotechnology, Liaoning Key Lab of Bio-organic Chemistry, Dalian University, Dalian 116622, Liaoning Province, P. R. China.|Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China.
authors.forename: Chaoyu
authors.initials: C
authors.lastname: Zhou
authors.affiliation: Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China.
authors.forename: Zhaofeng
authors.initials: Z
authors.lastname: Wu
authors.affiliation: Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China.
authors.forename: Yanan
authors.initials: Y
authors.lastname: Guo
authors.affiliation: Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China.
authors.forename: Yushu
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Life Science and Biotechnology, Liaoning Key Lab of Bio-organic Chemistry, Dalian University, Dalian 116622, Liaoning Province, P. R. China.
authors.forename: Hongyu
authors.initials: H
authors.lastname: Cao
authors.affiliation: School of Life Science and Biotechnology, Liaoning Key Lab of Bio-organic Chemistry, Dalian University, Dalian 116622, Liaoning Province, P. R. China.
authors.forename: Xuefang
authors.initials: X
authors.lastname: Zheng
authors.affiliation: Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics &Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China.
authors.forename: Xincun
authors.initials: X
authors.lastname: Dou