Figure 3.
Cyclic voltammograms of 0.1 mM SY recorded at GCE (a), GO/GCE (b), ERGO/GCE (c) and MnO2 NRs-ERGO/GCE (d) in 0.3 M citric acid-sodium citrate buffer (pH 4.5), scan rate 0.1 V/s.
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