Nickel-cerium layered double hydroxide as electrocatalyst for glycerol oxidation

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Abstract

A new nickel based layered double hydroxide nanomaterial, Ni0.8Ce0.2-LDH, constituted by about 3 nm large nanoparticles exhibiting enhanced electrocatalytic properties towards oxidation of glycerol in alkaline media, was prepared by incorporation of 20 wt.% of CeIII ions into α-nickel hydroxide. This can be oxidized to CeIV, as demonstrated by X-ray photoelectron spectroscopy, a much electron withdrawing and oxidizing species responsible for electronic interactions and additional electrocatalytic active sites giving rise to synergic effects. High-resolution transmission electron microscopy images and the X-ray diffractograms indicated a material with a significantly lower size and degree of crystallinity than α-Ni(OH)2, one of the factors contributing to its enhanced electrochemical and electrocatalytic activity, as demonstrated by cyclic voltammetry and electrochemical impedance spectroscopy, suggesting a good potentiality for development of glycerol fuel cells.

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APA

de Assis, G. L., Gonçalves, J. M., Bernardes, J. S., & Araki, K. (2020). Nickel-cerium layered double hydroxide as electrocatalyst for glycerol oxidation. Journal of the Brazilian Chemical Society, 31(11), 2351–2359. https://doi.org/10.21577/0103-5053.20200131

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