The electrochemical oxidation of 5-hydroxymethylfurfural (HMF) to high value-added downstream products is a sustainable and cost-effective strategy. In this study, a series of copper-based HMF oxidation reaction (HMFOR) catalysts were synthesized through a modified chronopotentiometry method using copper mesh as a starting material. The cerium-doped copper mesh catalyst, denoted as Ec CM-Ce demonstrates exceptional performance in the HMFOR, exhibiting remarkable selectivity (99.2%), yield (96.4%), Faraday efficiency (92.6%), and stability (12 cycles without significant activity decay). X-ray diffraction and surface-enhanced in situ Raman spectroscopy demonstrated the transformation of Cu₂O to CuO during the oxidation of HMF to FDCA. Electrochemical impedance spectroscopy and surface-enhanced in situ infrared spectroscopy indicated that cerium enhanced the electron transfer efficiency and adsorption of water as well as organic molecules. This study not only introduces a novel method for synthesizing electro-catalysts but also suggests innovative approaches for the electrochemical HMF oxidation.

中文翻译：

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电化学合成的 Ce 掺杂铜网催化剂对 HMF 向 FDCA 转化具有高活性和稳定性


5-羟甲基糠醛（HMF）电化学氧化生产高附加值下游产品是一种可持续且具有成本效益的策略。在这项研究中，以铜网为起始材料，通过改进的计时电位法合成了一系列铜基HMF氧化反应（HMFOR）催化剂。掺铈铜网催化剂，表示为 Ec CM-Ce，在 HMFOR 中表现出卓越的性能，表现出卓越的选择性 (99.2%)、产率 (96.4%)、法拉第效率 (92.6%) 和稳定性（12 个循环，无明显活性）衰变）。 X射线衍射和表面增强原位拉曼光谱证明了HMF氧化成FDCA过程中Cu ₂ O转化为CuO。电化学阻抗谱和表面增强原位红外光谱表明，铈增强了电子转移效率以及水和有机分子的吸附。这项研究不仅介绍了一种合成电催化剂的新方法，而且还提出了电化学 HMF 氧化的创新方法。