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Direct Comparison o...
Direct Comparison of PdAu Alloy Thin Films and Nanoparticles upon Hydrogen Exposure
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- Bannenberg, Lars J. (författare)
- Technische Universiteit Delft,Delft University of Technology (TU Delft)
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- Nugroho, Ferry, 1986 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Schreuders, Herman (författare)
- Technische Universiteit Delft,Delft University of Technology (TU Delft)
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- Norder, Ben (författare)
- Technische Universiteit Delft,Delft University of Technology (TU Delft)
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- Trinh, Thu Trang (författare)
- Helmholtz Zentrum,Helmholtz Center
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- Steinke, Nina Juliane (författare)
- STFC Rutherford Appleton Laboratory
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- Van Well, Ad A. (författare)
- Technische Universiteit Delft,Delft University of Technology (TU Delft)
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- Langhammer, Christoph, 1978 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Dam, B. (författare)
- Technische Universiteit Delft,Delft University of Technology (TU Delft)
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(creator_code:org_t)
- 2019-04-08
- 2019
- Engelska.
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Ingår i: ACS Applied Materials & Interfaces. - : American Chemical Society (ACS). - 1944-8252 .- 1944-8244. ; 11:17, s. 15489-15497
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https://pubs.acs.org...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Nanostructured metal hydrides are able to efficiently detect hydrogen in optical sensors. In the literature, two nanostructured systems based on metal hydrides have been proposed for this purpose each with its own detection principle: continuous sub-100 nm thin films read out via optical reflectance/transmittance changes and nanoparticle arrays for which the detection relies on localized surface plasmon resonance. Despite their apparent similarities, their optical and structural response to hydrogen has never been directly compared. In response, for the case of Pd 1-y Au y (y = 0.15-0.30) alloys, we directly compare these two systems and establish that they are distinctively different. We show that the dissimilar optical response is not caused by the different optical readout principles but results from a fundamentally different structural response to hydrogen due to the different nanostructurings. The measurements empirically suggest that these differences cannot be fully accounted by surface effects but that the nature of the film-substrate interaction plays an important role and affects both the hydrogen solubility and the metal-to-metal hydride transition. In a broader perspective, our results establish that the specifics of nanoconfinement dictate the structural properties of metal hydrides, which in turn control the properties of nanostructured devices including the sensing characteristics of optical hydrogen sensors and hydride-based active plasmonic systems.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- optical hydrogen sensing
- plasmonics
- nanoparticles
- thin films
- nanostructuring
- metal hydride
- X-ray diffraction
- PdAu
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- Av författaren/redakt...
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Bannenberg, Lars ...
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Nugroho, Ferry, ...
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Schreuders, Herm ...
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Norder, Ben
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Trinh, Thu Trang
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Steinke, Nina Ju ...
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Van Well, Ad A.
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Langhammer, Chri ...
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Dam, B.
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Annan fysik
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NATURVETENSKAP
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och Kemi
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och Annan kemi
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Chalmers tekniska högskola