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. 2024 Aug 19;14:19222. doi: 10.1038/s41598-024-70132-z

Figure 3.

Figure 3

(A) ζ-potential over pH in 10 mM KCl solution of pristine mesoporous silica nanoparticles (MSN), titania nanoparticles (TiNPs), and dyes encapsulated in mesoporous silica nanoparticles coated with a titania layer (dye-MSN@TiO2). The nanoparticle tracers exhibit zeta potentials in the range of titania nanoparticles, indicating successful surface coating. RhB rhodamine B (amphoteric), SG sulforhodamine/amidorhodamine G (anionic), R6G rhodamine 6G (cationic). (B) Particle–particle interaction energy according to DLVO theory at different pH for SG-MSN@TiO2.