Wide-Field Surface Plasmon Resonance Microscopy for In-Situ Characterization of Nanoparticle Suspensions

Nizamov, Shavkat; Mirsky, Vladimir M.

doi:10.1007/978-3-662-56322-9_3

Cited by 3 publications

(2 citation statements)

References 144 publications

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“…In this respect, machine learning methodologies (e.g. deep learning [130][131][132]) should soon help mining more massively the data acquired per (optical) image and accelerating their time-demanding processing, while removing some subjectivity bias. Together with the spatial information on the localization of the event, kinetic information is also reached.…”

Section: [422] Probing the Electrode-electrolyte Interfacementioning

confidence: 99%

Electrochemistry and Optical Microscopy

Kanoufi

2021

Encyclopedia of Electrochemistry

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Electrochemistry exploits local current heterogeneities at various scales ranging from the micrometer to the nanometer. The last decade has witnessed unprecedented progress in the development of a wide range of electroanalytical techniques allowing to reveal and quantify such heterogeneity through multiscale and multifonctionnal operando probing of electrochemical processes. However most of these advanced electrochemical imaging techniques, employing scanning probes, suffer from either low imaging throughput or limited imaging size. In parallel, optical microscopies, which can image a wide field of view in a single snapshot, have made considerable progress in terms of sensitivity, resolution and implementation of detection modes. Optical microscopies are then mature enough to propose, with basic bench equipment, to probe in a non destructive way a wide range of optical (and therefore structural) properties of a material in situ, in real time: under operating conditions. They offer promising alternative strategies for quantitative high-resolution imaging of electrochemistry. The first sections recall the optical properties of materials and how they can be probed optically. They discuss fluorescence, Raman, surface plasmon resonance, scattering or refractive index. Then the different optical microscopes used to image electrochemical processes are examined along with some strategies to extract quantitative electrochemical information from optical images. Finally the last section reviews some examples of in situ imaging, at micro-to nanometer resolution, and quantification of electrochemical processes ranging from solution diffusion to the conversion of molecular interfaces or solids.]

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Section: [422] Probing the Electrode-electrolyte Interfacementioning

confidence: 99%

Electrochemistry and Optical Microscopy

Kanoufi

2021

Encyclopedia of Electrochemistry

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“…This is in contrast to many other experimental techniques which are often limited to measuring the average response across a nanoparticle population. Optical microscopy can not only allow the position of each particle to be identified [25][26][27][28][29] but also enable changes in the chemical identity of solid particles to be monitored on the basis of the differences in their spectral Figure 1 Schematic of a redox-driven dissolution of metal nanoparticles by electron transfer over macroscopic distances. Molecular oxidising agents notably dissolved oxygen in trace amounts may oxidise the nanoparticles by electron transfer via a conductive substrate with charge injection from the latter at any point on the electrode surface.…”

Section: Introductionmentioning

confidence: 99%

Substrate mediated dissolution of redox active nanoparticles; electron transfer over long distances

et al. 2021

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Reflective dark field microscopy is used to observe the decrease in the light scattered from Ag nanoparticles immobilised on differing solid substrates. The nanoparticles are exposed to solutions containing halide ions, both at open circuit and under potentiostatic control, leading to the loss of the nanomaterial. By coupling optical and electrochemical techniques the physical origin of this transformation is demonstrated to be the electrochemical dissolution of the metal nanoparticles driven by electron transfer to ultra-trace dissolved oxygen. The dissolution kinetics of the surface-supported metal nanoparticles is compared on four substrate materials (i.e., glass, indium titanium oxide, glassy carbon and platinum) with different electrical conductivity. The three conductive substrates catalyse the redox-driven dissolution of Ag nanoparticles with the electrons transferred from the nanoparticles, via the macroscopic electrode to the dioxygen electron acceptor.

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