Zhang, Li

Jin, Peiyue

Wu, Ze

Zhou, Bo

Jiang, Junchang

Deng, Aomeng

Li, Qiuyue

Hussain, Tanveer

Zhang, Yiqiong

Liu, Hanwen

Wang, Shuangyin

2024

<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/Co₃O₄ 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 (NH₃). The open-circuit potential spontaneous experiment shows that more 5-hydroxymethylfurfural molecules are adsorbed in the Helmholtz layer of the CuO/Co₃O</sub>4</sub> composite, which certifies that the CuO/Co₃O₄ heterostructure is conducive to the kinetic adsorption of 5-hydroxymethylfurfural. In situ electrochemical impedance spectroscopy further shows that CuO/Co₃O₄ has faster reaction kinetics and lower reaction potential in oxygen evolution reaction and 5-hydroxymethylfurfural electrocatalytic oxidation. Moreover, CuO/Co₃O₄ also has a good reduction effect on NO₃ . The ex-situ Raman spectroscopy shows that under the reduction potential, the metal oxide is reduced, and the generated Cu₂O can be used as a new active site for the reaction to promote the electrocatalytic conversion of NO₃ to NH₃ synthesis. This work provides valuable guidance for the synthesis of value-added chemicals by 5-hydroxymethylfurfural electrocatalytic oxidation coupled with NO₃ while efficiently producing NH₃.</p>

Energy & Environmental Materials

https://hdl.handle.net/1959.11/60382

en

Wiley-Blackwell Publishing Ltd

Attribution 4.0 International

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

Journal Article

Publication