Bi Jiahui, Xu Hui, Wang Wenke, Sang Ting, Jiang Anning, Hao Jingcheng, Li Zhonghao
Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, China.
School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, China.
Chemistry. 2023 Jul 26;29(42):e202300973. doi: 10.1002/chem.202300973. Epub 2023 Jun 16.
Electrooxidation of 5-hydroxymethylfural (HMF) into 2,5-furandicarboxylicacid (FDCA) has been regarded as a promising sustainable approach to achieve value-added chemicals. However, it is still impeded by the unsatisfactory performance of electrocatalysts. Here, Cu P -CoP heterostructure nanosheets were reported to enable powerful HMF electrooxidation. The Cu P -CoP heterostructure nanosheets were fabricated by microwave-assisted deep eutectic solvent (DES) approach, along with subsequent phosphiding. The Cu P -CoP heterostructure nanosheets enabled a superb 100 % HMF conversion at 1.43 V (vs. RHE) with 98.8 % FDCA yield and 98 % Faradaic efficiency (FE), demonstrating its promising application in HMF electrooxidation. X-ray photoelectron spectroscopy (XPS) analysis, open-circuit potential (OCP) approach and density functional theory (DFT) calculation uncovered that the electron transfer and redistribution between Cu P and CoP improved the adsorption capacity of HMF and modulated the catalytic performance. This study not only offered a powerful electrocatalyst for HMF electrooxidation, but also provided a conceptually new strategy for the heterostructure catalyst design.
将5-羟甲基糠醛（HMF）电氧化为2,5-呋喃二甲酸（FDCA）被认为是一种实现增值化学品的有前景的可持续方法。然而，它仍然受到电催化剂性能不理想的阻碍。在此，据报道CuP-CoP异质结构纳米片能够实现高效的HMF电氧化。通过微波辅助深共熔溶剂（DES）方法并随后进行磷化制备了CuP-CoP异质结构纳米片。CuP-CoP异质结构纳米片在1.43 V（相对于可逆氢电极）下实现了100%的出色HMF转化率，FDCA产率为98.8%，法拉第效率（FE）为98%，证明了其在HMF电氧化中的应用前景。X射线光电子能谱（XPS）分析、开路电位（OCP）方法和密度泛函理论（DFT）计算表明，CuP和CoP之间的电子转移和重新分布提高了HMF的吸附能力并调节了催化性能。这项研究不仅为HMF电氧化提供了一种高效的电催化剂，还为异质结构催化剂设计提供了一种全新的策略。
