Chinese Journal of Catalysis ›› 2024, Vol. 63: 282-291.

• Articles • Previous Articles    

Realizing efficient electrochemical oxidation of 5-hydroxymethylfurfural on a freestanding Ni(OH)2/nickel foam catalyst

Yunying Huoa,1, Cong Guoa,1, Yongle Zhanga, Jingyi Liua, Qiao Zhanga,*(), Zhiting Liua, Guangxing Yanga, Rengui Lib,*(), Feng Penga,*()   

  1. aSchool of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China
    bState Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
  • Received:2024-06-10 Accepted:2024-06-24 Online:2024-08-18 Published:2024-08-19
  • Contact: *E-mail: zhangqiao@gzhu.edu.cn (Q. Zhang), rgli@dicp.ac.cn (R. Li), fpeng@gzhu.edu.cn (F. Peng).
  • About author:

    1Contributed equally to this work.

  • Supported by:
    National Natural Science Foundation of China(51706231);Natural Science Foundation of Guangzhou City(202201020090);fund of the State Key Laboratory of Catalysis in DICP(N-22-10)

Abstract:

With the continuous improvement of solar energy production capacity, how to effectively use the electricity generated by renewable solar energy for electrochemical conversion of biomass is a hot topic. Electrochemical conversion of 5-hydroxymethylfurfural (HMF) to biofuels and value-added oxygenated commodity chemicals provides a promising and alternative pathway to convert renewable electricity into chemicals. Although nickel-based eletrocatalysts are well-known for HMF oxidation, their relatively low intrinsic activity, poor conductivity and stability still limit the potential applications. Here, we report the fabrication of a freestanding nickel-based electrode, in which Ni(OH)2 species were in-situ constructed on Ni foam (NF) support using a facile acid-corrosion-induced strategy. The Ni(OH)2/NF electrocatalyst exhibits stable and efficient electrochemical HMF oxidation into 2,5-furandicarboxylic acid (FDCA) with HMF conversion close to 100% with high Faraday efficiency. In-situ formation strategy results in a compact interface between Ni(OH)2 and NF, which contributes to good conductivity and stability during electrochemical reactions. The superior performance benefits from dynamic cyclic evolution of Ni(OH)2 to NiOOH, which acts as the reactive species for HMF oxidation to FDCA. A scaled-up device based on a continuous-flow electrolytic cell was also established, giving stable operation with a high FDCA production rate of 27 mg h-1 cm-2. This job offers a straightforward, economical, and scalable design strategy to design efficient and durable catalysts for electrochemical conversion of valuable chemicals.

Key words: Acid-corrosion-induced, 5-Hydroxymethylfurfural, Electrocatalytic oxidation, Ni electrocatalysis