ArticleACS omega2026
Direct Determination of Apparent Particle Density and Porosity in Silica Nanoparticles by Size-Resolved Mass-Volume Analysis.
Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
1 author.
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Abstract
Porous silica nanoparticles are widely used in catalysis, separations, and nanomaterial applications, yet their internal structure is typically inferred from ensemble measurements that assume structural uniformity across particle populations. Here, we determine the apparent particle density and porosity of silica nanoparticles on a fraction-resolved basis by independently measuring nanoparticle mass and geometric volume. Particle effective mass is obtained from centrifugal field-flow fractionation (CFFF) retention behavior, while particle volume is determined from transmission electron microscopy measurements of narrowly fractionated particle populations. The analysis was applied to silica nanoparticles spanning 100-700 nm, including mesoporous particles, nominally nonporous nanoparticles, and NIST-traceable size standards. Apparent densities range from approximately 1210 to 2150 kg m
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Registered trials
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