Figure 4 | Scientific Reports

Figure 4

From: High-efficiency freezing-induced loading of inorganic nanoparticles and proteins into micron- and submicron-sized porous particles

Figure 4

(a) SEM image of a microparticle loaded with AuNPs by FIL; (b) CLSM image of unloaded control microparticles; (c) CLSM image of a microparticle loaded with BSA–RITC by FIL; (d) dependence of the mass fraction of BSA–RITC on the number of freezing/thawing cycles or of adsorption steps. The arrow points to the mass fraction of BSA–RITC obtained by coprecipitation (empty red circle); (e) photo of the tubes containing CaCO3/BSA–RITC microparticles obtained by (I) adsorption, (II) coprecipitation, and (III) FIL.

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