段老师在 Chem Eng J 期刊发表论文

段老师参与完成的题目为“Trimetallic FeNiCo layered double hydroxide catalysts for industrial-level electrochemical glycerol upgrading”的论文被期刊Chemical Engineering Journal接收。段老师在这篇论文中主要开展了第一性原理的相关工作。

本文介绍了一种高效电催化剂FeNiCo-Co(OH)2在甘油氧化反应中的应用，该催化剂通过在Co(OH)2前驱体上生长互连的FeNiCo层状双氢氧化物（LDH）纳米片来实现。研究显示，这种催化剂能够在较低电压下达到工业级电流密度，并且对甲酸和草酸的选择性生产表现出显著优势。其优异性能归因于优化的电子结构和FeNiCo LDH内部的协同作用，这些因素共同促进了高价态物质的形成、中间产物的有效管理、降低电荷转移阻力以及优化的质量传输，从而提高了甘油的吸附和氧化效率。此外，实验结果表明，该电极能够在高电流密度下稳定运行，并在8小时内分别产生227.50和104.17 mmol cm^-2的甲酸和草酸产量。这项工作不仅揭示了一种新型过渡金属基甘油氧化反应电催化剂，还为生物质增值化利用奠定了基础，展现了在工业应用中的巨大潜力。

该文章基本信息如下：

  • 标题：Trimetallic FeNiCo layered double hydroxide catalysts for industrial-level electrochemical glycerol upgrading
  • 作者：Guansheng Chen, Xiali Wang, Mingkun Jiang, Yajie Wang, Yang Yang, Xuehai Gong, Wanlong Xi, Xianbao Duan, Dan Wu*

  • 摘要：Electrocatalytic conversion of glycerol, a byproduct of biodiesel production, into high value-added chemicals presents a transformative approach for biomass valorization. However, developing stable catalysts that consistently achieve industrial-grade current density at low potentials remains challenging. Herein, a highly efficient FeNiCo-Co(OH)2 electrocatalyst for the glycerol oxidation, by leveraging interconnected FeNiCo layered double hydroxide (LDH) nanosheets grown on a Co(OH)2 precursor is developed. This catalyst achieves an impressive current density of 1000 mA cm− 2 at a low voltage of 1.38 V, exhibiting remarkable selectivity for formate and glycollate production. This superior performance stems from the optimized electronic structure and synergistic interactions within the FeNiCo LDHs, enabling the formation of high-valent species at lower potentials, efficient handling reaction intermediates, reduced charge transfer resistance, upward d band center and optimized mass transport, thereby enhancing glycerol adsorption and oxidation. Notably, the electrode exhibits stable operation at 120 mA cm− 2 for 32 h and yields 227.50 and 104.17 mmol cm− 2 for formate and glycollate, respectively, at industrial current densities for 8 h. This study unveils a novel transition metal-based glycerol oxidation reaction electrocatalyst and lays a foundation for its industrial application, highlighting significant advancements in biomass valorization.

  • 期刊：Chemical Engineering Journal

  • 链接：https://www.sciencedirect.com/science/article/pii/S1385894724089265

Chemical Engineering Journal是中科院工程技术大类1区期刊，2024年影响因子为13.3。