Figure 4

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Characterizations of yolk-shell Zn-5-chlorobenzimidazole architecture. (a) TEM image of PB@ Zn-5-chlorobenzimidazole core-shell structure. (b) TEM image of PB@Void@Zn-5-chlorobenzimidazole yolk-shell structure. (c) Bright field STEM image, HAADF-STEM image and element mapping images of hollow PB@Void@Zn-5-chlorobenzimidazole yolk-shell structure. The scale bars are 50 nm.
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