Catalytic oxidation of 5-hydroxylmethylfurfural (HMF) is a sustainable strategy to produce 2,5-furandicarboxylic acid (FDCA) as a desirable alternative to substitute fossil-based terephthalic, isophthalic and adipic acids for synthesizing biopolymers. However, the reaction mostly depends on noble metal catalysts for the generation of reactive oxygen species to accelerate the oxidation of alcohol groups. Here, we report a facile route to generate a highly active catalyst for the simultaneous production of FDCA via HMF oxidation and high-purity H₂. Co₃O₄ nanowires with a pine needle-like shape were in situ grown on nickel foam (CoNW/NF) and employed as bifunctional catalysts for both the electrooxidation of HMF and the hydrogen evolution reaction (HER), realizing a high catalytic activity, robust electrochemical durability and nearly 100% faradaic efficiency. Such an inexpensive and monolithic electrode may assist in upgrading biochemicals with a high energy efficiency.

中文翻译：

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Co3O4纳米线在镍泡沫上的原位锚固：一种出色的双功能催化剂，用于节能的同时反应

5-羟甲基糠醛（HMF）的催化氧化是生产2,5-呋喃二甲酸（FDCA）的可持续策略，可作为替代化石基对苯二甲酸，间苯二甲酸和己二酸用于合成生物聚合物的理想替代方法。但是，该反应主要依赖于贵金属催化剂来产生活性氧，以加速醇基的氧化。在这里，我们报告了一种通过HMF氧化和高纯度H ₂同时生产FDCA的高活性催化剂的简便方法。原位呈松针状的Co ₃ O ₄纳米线在镍泡沫（CoNW / NF）上生长，并用作HMF的电氧化和放氢反应（HER）的双功能催化剂，实现了高催化活性，强大的电化学耐久性和接近100％的法拉第效率。这种便宜且整体的电极可以帮助以高能量效率来升级生物化学制品。