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(a) FTIR spectra of GO‐CO‐γ‐PGA and APT‐GO‐CO‐γ‐PGA. (b) XPS wide spectrum of APT‐GO‐CO‐γ‐PGA. (c) UV‐Vis absorption spectra of NH2‐AS1411, GO‐CO‐γ‐PGA and APT‐GO‐CO‐γ‐PGA. (d) Zeta potential of GO‐CO‐γ‐PGA and APT‐GO‐CO‐γ‐PGA. (e) XRD spectra of GO, GO‐CO‐γ‐PGA and APT‐GO‐CO‐γ‐PGA. (f) DLS spectra of GO‐CO‐γ‐PGA and APT‐GO‐CO‐γ‐PGA. (g) TEM image of GO‐CO‐γ‐PGA. (h) TEM image of APT‐GO‐CO‐γ‐PGA.
