CuO/Co3O4 Bifunctional Catalysts for Electrocatalytic 5‐Hydroxymethylfurfural Oxidation Coupled Cathodic Ammonia Production

Author(s)
Zhang, Li
Jin, Peiyue
Wu, Ze
Zhou, Bo
Jiang, Junchang
Deng, Aomeng
Li, Qiuyue
Hussain, Tanveer
Zhang, Yiqiong
Liu, Hanwen
Wang, Shuangyin
Publication Date
2024
Abstract
<p>The electrochemical coupling of biomass oxidation and nitrogen conversion presents a potential strategy for high value-added chemicals and nitrogen cycling. Herein, in this work, CuO/Co<sub>3</sub>O<sub>4</sub> with heterogeneous interface is successfully constructed as a bifunctional catalyst for the electrooxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and the electroreduction of nitrate to ammonia (NH<sub>3</sub>). The open-circuit potential spontaneous experiment shows that more 5-hydroxymethylfurfural molecules are adsorbed in the Helmholtz layer of the CuO/Co<sub>3</sub>O</sub>4</sub> composite, which certifies that the CuO/Co<sub>3</sub>O<sub>4</sub> heterostructure is conducive to the kinetic adsorption of 5-hydroxymethylfurfural. In situ electrochemical impedance spectroscopy further shows that CuO/Co<sub>3</sub>O<sub>4</sub> has faster reaction kinetics and lower reaction potential in oxygen evolution reaction and 5-hydroxymethylfurfural electrocatalytic oxidation. Moreover, CuO/Co<sub>3</sub>O<sub>4</sub> also has a good reduction effect on NO<sub>3</sub> . The ex-situ Raman spectroscopy shows that under the reduction potential, the metal oxide is reduced, and the generated Cu<sub>2</sub>O can be used as a new active site for the reaction to promote the electrocatalytic conversion of NO<sub>3</sub> to NH<sub>3</sub> synthesis. This work provides valuable guidance for the synthesis of value-added chemicals by 5-hydroxymethylfurfural electrocatalytic oxidation coupled with NO<sub>3</sub> while efficiently producing NH<sub>3</sub>.</p>
Citation
Energy & Environmental Materials
Link
Publisher
Wiley-Blackwell Publishing Ltd
Rights
Attribution 4.0 International
Title
CuO/Co3O4 Bifunctional Catalysts for Electrocatalytic 5‐Hydroxymethylfurfural Oxidation Coupled Cathodic Ammonia Production
Type of document
Journal Article
Entity Type
Publication

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