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. 2022 Sep 16;17(9):e0274753. doi: 10.1371/journal.pone.0274753

Fig 6. Zeta potential measurements of the prepared nanomaterials.

Fig 6

(A) Ag NPs before and after calcination, (B) TiO2 NPs before and after calcination, (C) Co(OH)2 NMs and Co3O4 NMs.