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A dose-response curve depending of the absorbance at 656 nm in the presence of different concentrations of H2O2. (a) VO2 nanofibers; (b) VO2 nanosheets; (c) VO2 nanorods. Error bars represent the standard deviation of three measurements. Conditions: pH, 4.0 (0.2 M citrate buffer); temperature, 25 °C; incubation time, 5 min.
