A Novel Gas-phase Hydrogen Peroxide Sensor Basing on a Combined Physical/chemical Transduction Mechanism

Abstract

In this work, different set-ups as well as different transducer materials have been investigated in order to develop a hydrogen peroxide (H 2 O 2 ) sensor for the gas phase. The sensor is based on a combined physical/chemical transduction mechanism and should be able to detect high H 2 O 2 concentrations up to 10 Vol.%. Different sensor arrangements are presented that are based on a "three sensor" cell and a diffusion cell. As transducer materials manganese oxide and copper alloys have been investigated. For the reference part of the sensor set-up, Teflon and enamel have been tested as passivating material.

Gas sensor investigation based on a catalytically activated thin‐film thermopile for H2O2 detection

“…In this work, a novel calorimetric H 2 O 2 gas sensor based on a thin‐film thermopile is investigated. The calorimetric sensor device relies on a differential set‐up of a catalytically activated and a passivated segment that was introduced in former works 20–22. In HPV atmosphere, the hydrogen peroxide decomposes on the catalyst and exothermic heat can be determined by a thin‐film thermopile in the form of a temperature increase.…”