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Figure 2. (A and B) Morphologies of NiHCF and NiHCF-MIP NCs; (C) TEM image of NiHCF-MIP NCs; (D and E) HRTEM image of the core-shell microstructure of one NiHCF-MIP nanocube and its EDXS mapping; (F) HRTEM image of the interface between the NiHCF core and the MIP shell; (G) FTIR and (H) XRD curves of NiHCF, NiHCF-MIP (BE), and NiHCF-MIP (AE) samples. NiHCF: Nickel hexacyanoferrate; MIP: molecularly imprinted polymer; NCs: nanocubes; TEM: transmission electron microscopy; HRTEM: high-resolution transmission electron microscopy; EDXS: energy-dispersive X-ray spectroscopy; FTIR: Fourier-transform infrared spectroscopy; XRD: X-ray diffraction; BE: before elution; AE: after elution; PDF: Powder Diffraction File.