Figure 4

SEM images of (a) pristine OLO, (b) a-CoPO4 coated OLO and (c) magnified SEM image of (b). HR-TEM images of (d) pristine OLO and (e) a-CoPO4 coated OLO.

SEM images of (a) pristine OLO, (b) a-CoPO4 coated OLO and (c) magnified SEM image of (b). HR-TEM images of (d) pristine OLO and (e) a-CoPO4 coated OLO.