Electrochemically synthesized Ce-doped Cu-mesh catalyst with high activity and stability towards HMF to FDCA conversion†

IF 4.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysis Science & Technology Pub Date : 2024-08-15 DOI:10.1039/D4CY00851K

Haoran Wu, Qi Liu, Didi Li, Haoyuan Gu, Hao Liu, Xiaohui Liu, Zixu Yang, Jing Xu and Minghui Zhu

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Abstract

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.

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电化学合成的掺杂 Ce 的铜网催化剂，对 HMF 到 FDCA 的转化具有高活性和稳定性

将 5-羟甲基糠醛（HMF）电化学氧化成高附加值的下游产品是一种可持续且具有成本效益的策略。本研究以铜网为起始材料，通过改良的计时电位法合成了一系列铜基 HMF 氧化反应（HMFOR）催化剂。掺铈的铜网催化剂（Ec CM-Ce）在 HMFOR 反应中表现出优异的性能，具有显著的选择性（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减）。X 射线衍射和表面增强原位拉曼光谱表明，在将 HMF 氧化成 FDCA 的过程中，Cu2O 转变成了 CuO。电化学阻抗光谱和表面增强原位红外光谱表明，铈提高了电子传递效率，增强了对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，还为 HMF 的电化学氧化提出了创新思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Catalysis Science & Technology CHEMISTRY, PHYSICAL-

CiteScore

8.70

自引率

6.00%

发文量

587

审稿时长

1.5 months

期刊介绍： A multidisciplinary journal focusing on cutting edge research across all fundamental science and technological aspects of catalysis. Editor-in-chief: Bert Weckhuysen Impact factor: 5.0 Time to first decision (peer reviewed only): 31 days