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Influence of ions on morphology. (A) SEM image of the product synthesized using the standard procedure except that the TBS solution was replaced with 18 MΩ water. (B, C) SEM images of the products obtained using the standard procedure, except that the TBS solution was substituted with 18 MΩ water supplemented with (B) NaCl and (C) tris, respectively. The scale bars in the insets of (A) and (C) are 2 µm.
