Figure 7

Current response (20 scans) of (a) MWCNT/Fe3O4/2,3-Nc, (b) MWCNT/Fe3O4/29H,31H-Pc, (c) MWCNT/ZnO/2,3-Nc and (d) MWCNT/ZnO/29H,31H-Pc in pH 7.2 PBS containing 0.14 mM of EP at scan rate of 25 mVs−1.

Current response (20 scans) of (a) MWCNT/Fe3O4/2,3-Nc, (b) MWCNT/Fe3O4/29H,31H-Pc, (c) MWCNT/ZnO/2,3-Nc and (d) MWCNT/ZnO/29H,31H-Pc in pH 7.2 PBS containing 0.14 mM of EP at scan rate of 25 mVs−1.