Influence of P(V3D3-co-TFE) Copolymer Coverage on Hydrogen Detection Performance of a TiO<sub>2</sub> Sensor at Different Relative Humidity for Industrial and Biomedical Applications
Mihai Brinza,
Lynn Schwäke,
Lukas Zimoch,
Thomas Strunskus,
Thierry Pauporté,
Bruno Viana,
Tayebeh Ameri,
Rainer Adelung,
Franz Faupel,
Stefan Schröder,
Oleg Lupan
Affiliations
Mihai Brinza
Multicomponent Materials, Department of Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
Lynn Schwäke
Multicomponent Materials, Department of Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
Lukas Zimoch
Functional Nanomaterials, Department of Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
Thomas Strunskus
Multicomponent Materials, Department of Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
Thierry Pauporté
Institut de Recherche de Chimie Paris-IRCP, Chimie ParisTech, Université PSL, rue Pierre et Marie Curie 11, 75231 Paris Cedex 05, France
Bruno Viana
Institut de Recherche de Chimie Paris-IRCP, Chimie ParisTech, Université PSL, rue Pierre et Marie Curie 11, 75231 Paris Cedex 05, France
Tayebeh Ameri
Kiel Nano, Surface and Interface Science (KiNSIS), Kiel University, Christian Albrechts-Platz 4, D-24118 Kiel, Germany
Rainer Adelung
Functional Nanomaterials, Department of Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
Franz Faupel
Multicomponent Materials, Department of Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
Stefan Schröder
Multicomponent Materials, Department of Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
Oleg Lupan
Multicomponent Materials, Department of Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
The detection of hydrogen gas is crucial for both industrial fields, as a green energy carrier, and biomedical applications, where it is a biomarker for diagnosis. TiO2 nanomaterials are stable and sensitive to hydrogen gas, but their gas response can be negatively affected by external factors such as humidity. Therefore, a strategy is required to mitigate these influences. The utilization of organic–inorganic hybrid gas sensors, specifically metal oxide gas sensors coated with ultra-thin copolymer films, is a relatively novel approach in this field. In this study, we examined the performance and long-term stability of novel TiO2-based sensors that were coated with poly(trivinyltrimethylcyclotrisiloxane-co-tetrafluoroethylene) (P(V3D3-co-TFE)) co-polymers. The P(V3D3-co-TFE)/TiO2 hybrid sensors exhibit high reliability even for more than 427 days. They exhibit excellent hydrogen selectivity, particularly in environments with high humidity. An optimum operating temperature of 300 °C to 350 °C was determined. The highest recorded response to H2 was approximately 153% during the initial set of measurements at a relative humidity of 10%. The developed organic–inorganic hybrid structures open wide opportunities for gas sensor tuning and customization, paving the way for innovative applications in industry and biomedical fields, such as exhaled breath analysis, etc.
