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Characterizations of the synthesis and modification of the nanomaterials. (A) TEM image of AHMSN, the diameter of AHMSN is about 155 nm; (B) TEM image of AHMSN@GA@PEI, the diameter of AHMSN@GA@PEI is about 176 nm; (C) Zeta potentials of HMSN (-36.73 mV), AHMSM (22.27 mV), AHMSN@Cur (5.73 mV) and AHMSN@GA@PEI@Cur (43.80 mV); (D) FT-IR spectra of HMSN, AHMSN and AHMSN@GA@PEI.
