Xiong Yongzhi, Jiang Jianchun, Liu Yajun, Ji Xialin, Chen Changzhou, Wang Kui
Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion, Institute of Advanced Carbon Conversion Technology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, China.
Key Laboratory of Biomass Energy and Material of Jiangsu Province, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, Jiangsu 210042, China.
Langmuir. 2024 Jun 4;40(22):11450-11459. doi: 10.1021/acs.langmuir.4c00258. Epub 2024 May 22.
The electrooxidation of 5-hydroxymethylfurfural (HMF) into 2,5-furandicarboxylic acid (FDCA) demonstrated its unique superiority, not only in reducing overpotential and improving energy conversion efficiency for green hydrogen production but also in utilizing abundant biomass resources and producing high-value-added chemicals. However, designing highly efficient electrocatalysts for HMF electrooxidation (HMF-EOR) with low cost and high performance for large-scale production remained a huge challenge. Herein, we introduced an easy one-step activation process to produce P-doped porous biochar loaded with multiple crystal surfaces exposed to CoPO catalysts (CoPO@PC), which exhibited outstanding electrooxidation performance. To achieve a current density of 50 mA cm, only a low overpotential of 200 mV was needed for the electrooxidation of HMF in 1.0 M KOH + 10 mM HMF. This performance far surpassed that of other similar materials. CoPO@PC exhibited outstanding HMF-EOR performance with high conversion (nearly 100%), selectivity (97.1%), faradaic efficiency (95.3%), and robust stability. This work represents a promising strategy to fabricate macroscale and low-cost HMF-EOR electrocatalysts and achieve potential industrial applications of HMF-EOR.
将5-羟甲基糠醛（HMF）电氧化为2,5-呋喃二甲酸（FDCA）显示出其独特的优势，不仅在降低过电位和提高绿色制氢的能量转换效率方面，而且在利用丰富的生物质资源和生产高附加值化学品方面。然而，设计用于HMF电氧化（HMF-EOR）的低成本、高性能的高效电催化剂以实现大规模生产仍然是一个巨大的挑战。在此，我们引入了一种简单的一步活化工艺来制备负载有多个暴露晶体表面的P掺杂多孔生物炭的CoPO催化剂（CoPO@PC），其表现出优异的电氧化性能。在1.0 M KOH + 10 mM HMF中对HMF进行电氧化时，要达到50 mA cm的电流密度，仅需200 mV的低过电位。该性能远远超过其他类似材料。CoPO@PC表现出优异的HMF-EOR性能，具有高转化率（近100%）、选择性（97.1%）、法拉第效率（95.3%）和强大的稳定性。这项工作代表了一种制备宏观规模且低成本的HMF-EOR电催化剂以及实现HMF-EOR潜在工业应用的有前景的策略。
