Journal Article

FZJ-2016-00452

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Detection of triacetone triperoxide using temperature cycled metal-oxide semiconductor gas sensors423

Warmer, J. ; Wagner, P. ; Schöning, M. J.FZJ* ; Kaul, P. (Corresponding author)

2015

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Please use a persistent id in citations: doi:10.1002/pssa.201431882

Abstract: The temperature-dependent sensing properties of metal-oxide semiconductor gas sensors (MOX), based on SnO2 and WO3, to measure triacetone triperoxide (TATP), diacetone diperoxid (DADP), and di-tert-butyl-peroxide (DTBP) and acetone are described. Conductivity measurements in the range from 100 to 400 °C operating temperature show two different reaction pathways on the surface for WO3 sensors. At temperatures below 150 °C organic peroxides react as an oxidizer which leads to an increase in the sensor resistance. Above 200 °C they react as a reducing agent that leads to a decrease of the sensor resistance. This effect is caused by two different, peroxide dependent reaction paths. The unique behavior of WO3-based sensors can be used for selectivity enhancements in temperature cycle operation mode. With this method gas concentrations down to a few ppb are detectable.

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Contributing Institute(s):

1. Bioelektronik (PGI-8)

Research Program(s):

1. 523 - Controlling Configuration-Based Phenomena (POF3-523) (POF3-523)

Appears in the scientific report 2015

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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