Robust Colloidal Synthesis of Palladium-Gold Alloy Nanoparticles for Hydrogen Sensing

Lerch, Sarah,1990Chalmers tekniska högskola,Chalmers University of Technology (författare)

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.

Stolas, Alicja,1992Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)stolas (författare)
Darmadi, Iwan,1990Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)darmadi (författare)
Wen, Xin,1991Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)wexin (författare)
Strach, Michal,1988Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)strach (författare)
Langhammer, Christoph,1978Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)clangham (författare)
Moth-Poulsen, Kasper,1978Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mkasper (författare)
Chalmers tekniska högskola (creator_code:org_t)

Ingår i:ACS Applied Materials & Interfaces: American Chemical Society (ACS)13:38, s. 45758-457671944-82521944-8244

Av författaren/redakt...: Lerch, Sarah, 19 ...; Stolas, Alicja, ...; Darmadi, Iwan, 1 ...; Wen, Xin, 1991; Strach, Michal, ...; Langhammer, Chri ...; visa fler...; Moth-Poulsen, Ka ...; visa färre...

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