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. 2023 Jan 10;13(2):283. doi: 10.3390/nano13020283

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) Raman scattering spectroscopy. (b) Nitrogen adsorption-desorption isotherms. (c) UV-Vis DRS. (d) Photoluminescence spectra. (e) Electrochemical impedance spectroscopy (EIS) Nyquist plots. (f) Tafel curves for CV1, CV2, and CV3.