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SEM images from (a) Zc(l) (b) Zc-3 (c) ZcDh:0 and (d) ZcDm-3. Images in (a) are from ZnO crystals with different shapes, while H2O2 apparently tend to reduce the cluster size into smaller particles (b); for ZcDh:0 in (c) H2O2 considerably reduced the clusters size which is shown in ZcDh-3 (d). All samples were collected in aqueous phase and were placed in an aluminium substrate.
