通过级联结构调整增强 5-羟甲基糠醛的电催化氧化作用，实现高稳定性生物质升级。

IF 26.6 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2024-08-22 DOI:10.1007/s40820-024-01493-3

Xiaoli Jiang, Xianhui Ma, Yuanteng Yang, Yang Liu, Yanxia Liu, Lin Zhao, Penglei Wang, Yagang Zhang, Yue Lin, Yen Wei

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引用次数: 0

摘要

电催化 5-羟甲基糠醛氧化反应（HMFOR）为将生物质衍生物转化为高附加值化学品提供了一种前景广阔的策略。本文提出了一种级联策略，通过在掺镍 Co3O4 上负载钯来构建 Pd-NiCo2O4 电催化剂，从而实现高活性和稳定的 HMF 氧化协同反应。在 1.5 V 的电压下，电流密度可达 800 mA cm-2，连续 10 次电解的法拉第效率和 2,5-呋喃二甲酸的产率均接近 100%。实验和理论结果表明，钯原子的引入可以调节 Ni/Co 的局部电子结构，不仅平衡了 HMF 和 OH- 物种的竞争吸附，还促进了活性 Ni3+ 物种的形成，诱导了高间接氧化活性。我们还发现，Ni 的加入促进了 Co2+ 的预氧化和亲电 OH* 的生成，有助于直接氧化过程。这项工作为设计先进的生物质升级电催化剂提供了一种新方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Enhancing the Electrocatalytic Oxidation of 5-Hydroxymethylfurfural Through Cascade Structure Tuning for Highly Stable Biomass Upgrading

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Enhancing the Electrocatalytic Oxidation of 5-Hydroxymethylfurfural Through Cascade Structure Tuning for Highly Stable Biomass Upgrading

Highlights

A novel cascade strategy is proposed to construct Pd-NiCo₂O₄ electrocatalyst.
First time discovery that Ni incorporation together with Pd loading is able to balance the competitive adsorption of OH^– and 5-hydroxymethylfurfural.
Pd–NiCo₂O₄promotes both the indirect and direct synergistic oxidation process.
Pd–NiCo₂O₄ catalyst exhibits extraordinary current density and excellent Faradaic Efficiency at a low potential.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.