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Preparation of Carbon Nanotube/MnO2 Nanocomposite as an Electrode Modifier for Prostate-Specific Antigen (PSA) Determination

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Figure

Figure 1. (A) Characteristic XRD profiles of the CNT/MnO2 hybrids. (B) XPS patterns and (C) the magnification of Mn 2p region of the CNT/MnO2 samples
Figure 2.  (A) CV profiles and (B) SWSV profiles of MWCNTs and CNT/MnO2 coated PGE in K4Fe(CN)6 (0.1 M)
Figure 3. CV profiles of 3.99 μg/L PSA recorded for a scan rate ranging from 0.02 to 0.4 V/s
Figure 5.  SWSV response obtained at the MIP-decorated PGE in the presence of PSA (varying concentration): (A) 0.01–10 ng/L and (B) 20–62 µg/L; the pH value, accumulation potential, and accumulation time were optimized as 10, −0.5 V, and 0.5 min, respectiv
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