Nanoplasmonic In Situ Spectroscopy for Catalysis Applications

Langhammer, Christoph; Larsson, Elin

doi:10.1021/cs300423a

Cited by 32 publications

(23 citation statements)

References 43 publications

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“…IRRAS [195,19], S-SHG [109] or FEM [196]. On the other hand, a current trend in achieving insight at elevated pressures and more realistic conditions is the application of new characterization methods, such as micro-reactors new methods [197,198] or sensing devices, exploiting different physical properties [199,200,201,202]. 19 The complexity gap is covering the study of gas and mass transport phenomena, which additionally to materials and pressure gaps need to be considered [178].…”

Section: Materials and Pressure Gapmentioning

confidence: 99%

“…The observed plasmon frequency is strongly dependent on the temperature [298], particle geometry, size, (dielectric) environment and the material. These dependencies are used, for INPS in order to characterize and study materials [67,93,202,299], by observing the change in plasmon frequency.…”

Section: Indirect Nanoplasmonic Sensing (Inps)mentioning

confidence: 99%

“…different layer thickness or samples temperature) the relative variations of the peak positions are measured, and not absolute ones. Further, the applied curve-fitting procedure efficiently reduces noise -the obtained measurement value will in the following be denoted as centroid [202]. Additionally, changes in the FWHM of the peaks an the extinction maxima of the signals is recorded.…”

Section: The Key Element Of the Setups Is An Inps Sensor Chip As Showmentioning

confidence: 99%

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Catalysis with Supported Size-selected Pt Clusters

Schweinberger¹

2014

Springer Theses

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Under ultra high vacuum conditions the electronic structure, adsorption properties and reactivity of two olefins on surfaces and Pt clusters were probed in the submonolayer range. With adsorbed trichloroethene a possible cluster-adsorbate induced change in the electronic structure and for ethene a low temperature, size dependent self-/hydrogenation was observed.In a collaborative approach, the Pt clusters were investigated under ambient pressure conditions. The clusters were characterized on local and integral level and tested towards temperature stability. Experiments in gas phase μ-reactors and in liquid, as part of a hybrid photo catalytic system, revealed size dependent reactivity.

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Section: Materials and Pressure Gapmentioning

confidence: 99%

Section: Indirect Nanoplasmonic Sensing (Inps)mentioning

confidence: 99%

Section: The Key Element Of the Setups Is An Inps Sensor Chip As Showmentioning

confidence: 99%

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Catalysis with Supported Size-selected Pt Clusters

Schweinberger¹

2014

Springer Theses

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Section: Direct Nanoplasmonic Sensingmentioning

confidence: 99%

“…The black solid line corresponds to a linear regression fi t yielding an empirical calibration curve that can be used to translate the Δ λ max signal into time-dependent particle size of the Pt nanoparticle. Adapted with permission from [5] and [78] . Copyright 2012 American Chemical Society.…”

Section: Molecular Diffusion In Materialsmentioning

confidence: 99%

Nanoplasmonic sensing for nanomaterials science

Larsson¹,

Syrenova

Langhammer

2012

Nanophotonics

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Nanoplasmonic sensing has over the last two decades emerged as and diversifi ed into a very promising experimental platform technology for studies of biomolecular interactions and for biomolecule detection (biosensors). Inspired by this success, in more recent years, nanoplasmonic sensing strategies have been adapted and tailored successfully for probing functional nanomaterials and catalysts in situ and in real time. An increasing number of these studies focus on using the localized surface plasmon resonance (LSPR) as an experimental tool to study a process of interest in a nanomaterial, with a materials science focus. The key assets of nanoplasmonic sensing in this area are its remote readout, non-invasive nature, single particle experiment capability, ease of use and, maybe most importantly, unmatched fl exibility in terms of compatibility with all material types (particles and thin/thick layers, conductive or insulating) are identifi ed. In a direct nanoplasmonic sensing experiment the plasmonic nanoparticles are active and simultaneously constitute the sensor and the studied nano-entity. In an indirect nanoplasmonic sensing experiment the plasmonic nanoparticles are inert and adjacent to the material of interest to probe a process occurring in/on this material. In this review we defi ne and discuss these two generic experimental strategies and summarize the growing applications of nanoplasmonic sensors as experimental tools to address materials science-related questions.

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