Journal article
Metal-polymer hybrid nanomaterials for plasmonic ultrafast hydrogen detection
Chalmers University of Technology1
Delft University of Technology2
National Centre for Nano Fabrication and Characterization, Technical University of Denmark3
Nanocharacterization, National Centre for Nano Fabrication and Characterization, Technical University of Denmark4
Electron matter interaction, Nanocharacterization, National Centre for Nano Fabrication and Characterization, Technical University of Denmark5
Nanostructure and Functionality, Nanocharacterization, National Centre for Nano Fabrication and Characterization, Technical University of Denmark6
Hydrogen-air mixtures are highly flammable. Hydrogen sensors are therefore of paramount importance for timely leak detection during handling. However, existing solutions do not meet the stringent performance targets set by stakeholders, while deactivation due to poisoning, for example by carbon monoxide, is a widely unsolved problem.
Here we present a plasmonic metal-polymer hybrid nanomaterial concept, where the polymer coating reduces the apparent activation energy for hydrogen transport into and out of the plasmonic nanoparticles, while deactivation resistance is provided via a tailored tandem polymer membrane. In concert with an optimized volume-to-surface ratio of the signal transducer uniquely offered by nanoparticles, this enables subsecond sensor response times.
Simultaneously, hydrogen sorption hysteresis is suppressed, sensor limit of detection is enhanced, and sensor operation in demanding chemical environments is enabled, without signs of long-term deactivation. In a wider perspective, our work suggests strategies for next-generation optical gas sensors with functionalities optimized by hybrid material engineering.
Language: | English |
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Year: | 2019 |
Pages: | 489-495 |
ISSN: | 14764660 and 14761122 |
Types: | Journal article |
DOI: | 10.1038/s41563-019-0325-4 |
ORCIDs: | Bastos da Silva Fanta, Alice , Kadkhodazadeh, Shima , Wagner, Jakob Birkedal , 0000-0001-5571-0454 , 0000-0002-5921-9336 , 0000-0003-2535-4174 , 0000-0002-8584-7336 and 0000-0003-2180-1379 |