A Sensor Array Realized by a Single Flexible TiO₂/POMs Film to Contactless Detection of Triacetone Triperoxide.

ABSTRACT: The homemade explosive, triacetone triperoxide (TATP), is easy to synthesize, sensitive to detonation but hard to detect directly. Vapor sensor arrays composed of a few sensor materials have the potential to discriminate TATP, but the stability of the sensor array is always a tricky problem since each sensor may encounter a device fault. Thus, a sensor array based on a single optoelectronic TiO₂/PW11 sensor was first constructed by regulating the excitation wavelength to discriminate TATP from other explosives. By in situ doping of Na₃PW12O40, a Keggin structure of PW11 formed on the TiO₂ to promote the photoinduced electron-hole separation, thus obviously improving the detection sensitivity of the sensor film and shortening the response time. The response of the TiO₂/PW11 sensor film to T

SUBMITTER: Lu X 

PROVIDER: S-EPMC6413185 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature