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Keywords:

  • adsorption;
  • diffusion;
  • IR spectroscopy;
  • mass transport;
  • yolk–shell structures
Thumbnail image of graphical abstract

Easy in, easy out: Mass transport through TiO2 and SiO2 shells was probed in the liquid phase with IR spectroscopy by detecting carbon monoxide adsorption in Pt@void@TiO2 yolk–shell and Pt@SiO2 core–shell nanostructures (see picture; C green, O red, Pt pale red). Adsorption was observed on the surface of Pt nanoparticle cores, and on the inner face of the TiO2 shells in the yolk–shell case.