Rationally Designed PdAuCu Ternary Alloy Nanoparticles for Intrinsically Deactivation-Resistant Ultrafast Plasmonic Hydrogen Sensing

• DOI: 10.1021/acssensors.9b00610
• Publication Date: 2019-05-06T18:24:51Z
• Authors: Iwan Darmadi; Ferry Anggoro Ard...; Shima Kadkhodazadeh; Jakob B. Wagner; Christoph Langhammer
• Keywords: Hydrogen sensor; Nanomaterials

Hydrogen sensors are a prerequisite for the implementation of hydrogen economy due to high flammability hydrogen-air mixtures. They comply with increasingly stringent requirements set by stakeholders, such as automotive industry and manufacturers safety systems, where sensor deactivation is severe but widely unaddressed problem. In response, we report intrinsically deactivation-resistant nanoplasmonic enabled rationally designed ternary PdAuCu alloy nanomaterial, which combines identified best intrinsic attributes constituent binary Pd alloys. This way, achieve extraordinary sensing metrics in synthetic air poisoning gas background, simulating real application conditions. Specifically, find detection limit low ppm range, hysteresis-free response over 5 orders magnitude pressure, subsecond time at room temperature, long-term stability, and, key, excellent resistance deactivating species like carbon monoxide, notably without any protective coatings. constitutes an important step forward optical technology, it enables under demanding conditions provides blueprint further material performance optimization combining concerting assets multicomponent nanoparticles. wider context, our findings highlight potential rational materials design through alloying multiple elements development, well engineered metal nanoparticles nanoplasmonics catalysis.