Preparation of Electrode Material Based to Bismuth Oxide-Attached Multiwalled Carbon Nanotubes for Lead (II) Ion Determination

Figure 3

TEM images of (a) CNTs, (b) Bi₂O₃@CNTs-50 at 500 nm scale bar, and (c) Bi₂O₃@CNTs-50 at 20 nm scale bar.

(a)

(b)

(c)