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. 2020 Jan 9;12:18. doi: 10.1007/s40820-019-0354-1

Fig. 2.

Fig. 2

a UV–Vis absorbance spectra for CuO NPs and flower-like CeO2 NPs/CuO NPs. Tauc plots for b CuO NPs and c flower-like CeO2 NPs/CuO NPs. d Mott–Schottky plots for flower-like CeO2 NPs/CuO NPs