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. 2020 Mar 23;10(3):586. doi: 10.3390/nano10030586

Figure 2.

Figure 2

Field emission scanning electron microscopy (FESEM) before adsorption for CuFe2O4 (a) and (b) CuFe2O4@Polythiophene composite) and after Hg2+ adsorption (CuFe2O4 (c) and (d) CuFe2O4@Polythiophene composite).