A surface passivated fluorinated polymer nanocomposite for carbon monoxide resistant plasmonic hydrogen sensing
Artikel i vetenskaplig tidskrift, 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.
Författare
Ida Östergren
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Iwan Darmadi
Chalmers, Fysik, Kemisk fysik
Badan Riset dan Inovasi Nasional
Sarah Lerch
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Robson Rosa Da Silva
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Mariavittoria Craighero
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Sri Harish Kumar Paleti
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Kasper Moth-Poulsen
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Universitat Politecnica de Catalunya
Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
Institucio Catalana de Recerca i Estudis Avancats
Christoph Langhammer
Chalmers, Fysik, Kemisk fysik
Christian Müller
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Journal of Materials Chemistry A
20507488 (ISSN) 20507496 (eISSN)
Vol. In PressPlastic Plasmonics
Stiftelsen för Strategisk forskning (SSF) (RMA15-0052), 2016-05-01 -- 2022-06-30.
Hybrid and Organic Thermoelectric Systems (HORATES)
Europeiska kommissionen (EU) (EC/H2020/955837), 2021-03-01 -- 2025-02-28.
Ämneskategorier
Polymerkemi
Annan kemiteknik
DOI
10.1039/d4ta00055b