3D multi-scale quantification of industrially relevant ultra-porous silicas by low-dose electron tomography combined with SANS
Source abstract
Abstract
Abstract Due to their versatile properties, nanostructured silicas are used in numerous applications for which structural properties are decisive. Being able to thoroughly understand porous multi-scale structures is therefore a means of improving composites and ensuring their fast processing and their durability. In this framework, electron tomography (ET) is a convenient tool that permits analysing the inner structure of any nano-object made of particles, necks, aggregates and pores. However, some materials are very sensitive to the electron beam, which can lead to misinterpretation. In this article, we highlight how any fractal silica, whether precipitated, fumed or in aerogel form, can be effectively characterized and described. Step-by-step low-dose tomography allows the unprecedented visualisation and quantification of architectures on large volumes, essential to feed numerical simulations. This local analysis is strengthened by statistical observation provided by Small Angle Neutron Scattering (SANS). We finally show how this kind of work can benefit an ageing study.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aerogels and thermal insulation · Mesoporous Materials and Catalysis · Electron and X-Ray Spectroscopy Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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