Figure 7

SEM of the reaction system and CDAg2 (a) 80 nmol/L Apt + 0.36 mg/mL CDAg2 + 0.16 mmol/L HCl + 11.2 μmol/L HAuCl4 + 2 mmol/L H2O2; (b) a + 0.13 μmol/L Pb(II); (c) a + 0.46 μmol/L Pb(II); (d) 0.36 mg/mL CDAg2.
SEM of the reaction system and CDAg2 (a) 80 nmol/L Apt + 0.36 mg/mL CDAg2 + 0.16 mmol/L HCl + 11.2 μmol/L HAuCl4 + 2 mmol/L H2O2; (b) a + 0.13 μmol/L Pb(II); (c) a + 0.46 μmol/L Pb(II); (d) 0.36 mg/mL CDAg2.