Fig. 3From: One-Pot Method for Multifunctional Yolk Structured Nanocomposites with N-doped Carbon Shell Using Polydopamine as PrecursorUV-Vis absorption spectra of MB during the reduction catalyzed by Au@void@C composite (a) and the recyclability of the Au@void@C as the catalyst for the reduction of MB with NaBH4 (b)Back to article page