702130.fig.004a
(a)
702130.fig.004b
(b)
702130.fig.004c
(c)
702130.fig.004d
(d)
Figure 4: TEM images of (a) pure MWCNTs, (b, d) BiVO4@MWCNTs, and (c) EDX spectrum of BiVO4@MWCNTs.