The main objective of the project is to develop a new nanostructured doped BST based
multifunctional gas sensor platform with specific sensitivity for detecting each gas from the group H2S,
SO2 and NH3 providing the potential to operate at temperatures as near as possible to the ambient temperature
and a detection range between 0-100 ppm.
Nanocrystalline semiconducting metal oxides with controlled composition are indeed of increasing interest in gas sensing and constitute also a new and exciting subject of fundamental research. Compounds having perovskite structures are among one of the most important classes of ternary oxides. Some composite systems (such as (Ba, Sr) TiO3) retained the attention due to their multisensing properties such as: humidity, thermal and photosensitivity. BST ceramics are good candidates for applications in phased array antennas, capacitors, PTC thermistors, and sensors.
SENSGAS project is aimed to create a new class of precisely nanostructured perovskite materials. The project takes into account that the recent research identified the sensing potential of un-modified and modified BST respectively and significant trends on nanotechnologies and gas-sensing layers to be employed. So far, the combined effects of multiple features and the resulting complexity have been explored at a rather preliminary phenomenological level, and a genuine understanding of the underlying mechanism between the BST surface and the gas is still missing, in particular for H2S, SO2, NH3 gases.
The main challenge of SENSGAS project is to gain the fundamental understanding of the details of the surface gas interactions in operation conditions close to the ones found in day-life science since these affects the sensing properties and then to translate this knowledge to the doped nanostructured BST based multifunctional gas sensor platform - containing a large array of chemically and/or morphologically different sensing elements which can be operated independently and has the potential towards detecting gas types (H2S, SO2 and NH3) at temperatures as near is possible to the ambient temperature in an operating range between 0-100 ppm.
This new gas sensor will be used in monitoring systems e. g. in heavy waters production, chemical industry (chemical and biological agent detection), fillers exploitaion
2012 July 19th
The first kick-off meeting of SENSGAS Project partners took placed at INCDMNR Institute ...