A surface passivated fluorinated polymer nanocomposite for carbon monoxide resistant plasmonic hydrogen sensing
Journal article, 2024
Plasmonic hydrogen sensors are promising safety monitoring devices for the emerging hydrogen economy provided a fast response time and poisoning resistance can be achieved. Nanocomposites composed of palladium nanoparticles embedded in a polymer matrix facilitate rapid hydrogen diffusion if a fluorinated polymer is used, while a denser polymer such as atactic poly(methyl methacrylate) (PMMA) facilitates a high degree of gas selectivity. However, nanocomposites that combine a fast response with poisoning resistance have not yet been realized. Here, these two properties are achieved simultaneously by modifying the surface of a fluorinated polymer nanocomposite with a thin PMMA coating, which functions as a molecular sieve that effectively blocks carbon monoxide. The resulting surface passivated nanocomposite shows a high degree of poisoning resistance without compromising a fast sensing response of 2-3 seconds upon exposure to 100 mbar of hydrogen. The sensor signal and response are preserved over 55 cycles of synthetic air containing 5% hydrogen and 500 ppm of carbon monoxide, indicating that nanocomposites are a viable approach for the realization of robust hydrogen sensors.
Author
Ida Östergren
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Iwan Darmadi
Chalmers, Physics, Chemical Physics
Badan Riset dan Inovasi Nasional
Sarah Lerch
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Robson Rosa Da Silva
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Mariavittoria Craighero
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Sri Harish Kumar Paleti
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Kasper Moth-Poulsen
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Polytechnic University of Catalonia
Institute of Material Science of Barcelona (ICMAB)
Catalan Institution for Research and Advanced Studies
Christoph Langhammer
Chalmers, Physics, Chemical Physics
Christian Müller
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Journal of Materials Chemistry A
20507488 (ISSN) 20507496 (eISSN)
Vol. In PressPlastic Plasmonics
Swedish Foundation for Strategic Research (SSF) (RMA15-0052), 2016-05-01 -- 2022-06-30.
Hybrid and Organic Thermoelectric Systems (HORATES)
European Commission (EC) (EC/H2020/955837), 2021-03-01 -- 2025-02-28.
Subject Categories
Polymer Chemistry
Other Chemical Engineering
DOI
10.1039/d4ta00055b