标题: Activating Co2+/Co3+Redox Couple Mediated-Electrooxidation of 5-Hydroxymethyl Furfuryl Under Low Potentials
作者: Cui, JW (Cui, Jingwei); Du, BY (Du, Bingyi); Jin, XQ (Jin, Xiuqi); Huang, ZH (Huang, Zhenghui); Peng, XS (Peng, Xiaosong); Li, WJ (Li, Wenjie); Li, W (Li, Wei); Huang, YC (Huang, Yu-Cheng); Lu, YR (Lu, Ying-Rui); Chen, CJ (Chen, Chaoji); Deng, HB (Deng, Hongbing)
来源出版物: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION DOI: 10.1002/anie.202513396 Early Access Date: OCT 2025 Published Date: 2025 OCT 6
摘要: Cobalt-based electrocatalysts are promising candidates for electrochemical 5-hydroxymethylfurfural oxidation reaction (eHMFOR). However, the activity origin for eHMFOR on most cobalt-based electrocatalysts is the Co3+/Co4+ redox couple at the high-potential window, instead of the Co2+/Co3+ redox couple at the low-potential window, thus leading to a high onset potential above 1.3 V. Herein, we developed F-VO-CoMoO4 catalyst containing abound oxygen vacancies and lattice fluorine (F) heteroatom, which activates the Co2+/Co3+ redox couple for eHMFOR at the low-potential window, e.g., 1.15 V. Oxygen vacancies prompt the electrochemical generation of Co3+-OHads at low potentials, and meanwhile, lattice F heteroatoms enhance the electrophilicity of Co3+-OHads. Benefiting by those unique structure, F-VO-CoMoO4 catalyst effectively electro-synthesizes 2,5-furandicarboxylic acid from 5-hydroxymethylfurfural, with a high yield (95.3%) and Faradaic efficiency (96.1%). This work provides an intelligent strategy for achieving the low-potential eHMFOR mediated by the Co2+/Co3+ redox couple, unlocking significant potential for reducing the energy consumption in biomass conversion.
作者关键词: Co2+/Co3+redox couple; Lattice fluorine heteroatom; Low potential; Oxygen vacancy; Synergistic effect
KeyWords Plus: ELECTROCHEMICAL OXIDATION; BIOMASS; STRATEGIES
地址: [Cui, Jingwei; Du, Bingyi; Jin, Xiuqi; Huang, Zhenghui; Peng, Xiaosong; Li, Wenjie; Li, Wei; Chen, Chaoji; Deng, Hongbing] Wuhan Univ, Sch Resource & Environm Sci, Hubei Key Lab Biomass Resource Chem & Environm Bio, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430079, Peoples R China.
[Li, Wei] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China.
[Huang, Yu-Cheng; Lu, Ying-Rui] Natl Synchrotron Radiat Res Ctr, Hsinchu 300092, Taiwan.
通讯作者地址: Li, W; Deng, HB (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Hubei Key Lab Biomass Resource Chem & Environm Bio, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430079, Peoples R China.
Li, W (通讯作者)，South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China.
电子邮件地址: [email protected]; [email protected]
影响因子：17
