Robust Colloidal Synthesis of Palladium-Gold Alloy Nanoparticles for Hydrogen Sensing
Artikel i vetenskaplig tidskrift, 2021

Metal nanoparticles are currently used in a variety of applications, ranging from life sciences to nanoelectronic devices to gas sensors. In particular, the use of palladium nanoparticles is gaining increasing attention due to their ability to catalyze the rapid dissociation of hydrogen, which leads to an excellent response in hydrogen-sensing applications. However, current palladium-nanoparticle-based sensors are hindered by the presence of hysteresis upon hydride formation and decomposition, as this hysteresis limits sensor accuracy. Here, we present a robust colloidal synthesis for palladium-gold alloy nanoparticles and demonstrate their hysteresis-free response when used for hydrogen detection. The obtained colloidal particles, synthesized in an aqueous, room-temperature environment, can be tailored to a variety of applications through changing the size, ratio of metals, and surface stabilization. In particular, the variation of the viscosity of the mixture during synthesis resulted in a highly tunable size distribution and contributed to a significant improvement in size dispersity compared to the state-of-the-art methods.


metal nanoparticles

palladium-gold alloys

colloidal synthesis

nanoparticle synthesis



Sarah Lerch

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Alicja Stolas

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Iwan Darmadi

Chalmers, Fysik, Kemisk fysik

Xin Wen

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Michal Strach

Chalmers, Fysik, F forskningsinfrastruktur (CMAL)

Christoph Langhammer

Chalmers, Fysik, Kemisk fysik

Kasper Moth-Poulsen

Chalmers, Kemi och kemiteknik, Tillämpad kemi

ACS Applied Materials & Interfaces

1944-8244 (ISSN) 1944-8252 (eISSN)

Vol. 13 38 45758-45767



Annan kemiteknik



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