Conductive composites of engineered nanomaterials with excellent gas sensing properties
Thesis event information
Date and time of the thesis defence
Place of the thesis defence
L10, Linnanmaa
Topic of the dissertation
Conductive composites of engineered nanomaterials with excellent gas sensing properties
Doctoral candidate
Master of engineering Jin Zhou
Faculty and unit
University of Oulu Graduate School, Faculty of Information Technology and Electrical Engineering, Microelectronics Research Unit
Subject of study
Electrical Engineering
Opponent
Professor Knut Irgum, University of Umeå
Custos
Professor Krisztian Kordas, University of Oulu
Novel Sensing Materials Offer Highly Selective and Sensitive Detection of Hazardous Gases
Novel Sensing Materials Offer Highly Selective and Sensitive Detection of Hazardous Gases
Gas sensors are essential devices for ensuring safety and process control in a wide range of industries as well as for monitoring health/medical and environmental conditions. While numerous commercial gas sensors exist on the market, their typical limitations include the use of rare metals and high operating temperatures. In his thesis, doctoral candidate Jin Zhou at the University of Oulu, together with his collaborators, has developed new types of gas sensor materials that overcome these drawbacks. By using engineered composites of conductive nanomaterials (carbon nanotubes and titanium carbides) and conjugated polymers (polysquaraines and polycroconaine) highly selective and sensitive detection of hazardous gases such as Hydrogen Sulfide and/or Ammonia is enabled at ultra-low, part-per-billion concentrations, even at room temperature. The breakthrough is achieved by designing and modeling the chemical structure of the materials along with experimental optimization of their compositions. The developed new gas sensing materials offer promising environmentally benign and economically beneficial alternatives to currently applied semiconducting metal oxides. Moreover, they and can contribute to the seamless expansion of the global efforts towards the digitalization of environment, health/medicine and process industries.
Gas sensors are essential devices for ensuring safety and process control in a wide range of industries as well as for monitoring health/medical and environmental conditions. While numerous commercial gas sensors exist on the market, their typical limitations include the use of rare metals and high operating temperatures. In his thesis, doctoral candidate Jin Zhou at the University of Oulu, together with his collaborators, has developed new types of gas sensor materials that overcome these drawbacks. By using engineered composites of conductive nanomaterials (carbon nanotubes and titanium carbides) and conjugated polymers (polysquaraines and polycroconaine) highly selective and sensitive detection of hazardous gases such as Hydrogen Sulfide and/or Ammonia is enabled at ultra-low, part-per-billion concentrations, even at room temperature. The breakthrough is achieved by designing and modeling the chemical structure of the materials along with experimental optimization of their compositions. The developed new gas sensing materials offer promising environmentally benign and economically beneficial alternatives to currently applied semiconducting metal oxides. Moreover, they and can contribute to the seamless expansion of the global efforts towards the digitalization of environment, health/medicine and process industries.
Last updated: 23.1.2024