Journal of Energy Chemistry ›› 2023, Vol. 86 ›› Issue (11): 480-489.DOI: 10.1016/j.jechem.2023.08.006

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Tailoring the selective adsorption sites of NiMoO by Ni particles for biomass upgrading assisted hydrogen production

Jia Wu, Zhixiang Zhai, Tianqi Yu, Xizi Wu, Shuaiqin Huang, Wenqing Cao, Yixuan Jiang, Jinge Pei, Shibin Yin*   

  1. Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, School of Physical Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
  • Received:2023-05-10 Revised:2023-07-25 Accepted:2023-08-04 Online:2023-11-15 Published:2023-11-07
  • Contact: *E-mail address: yinshibin@gxu.edu.cn (S. Yin).

Abstract: 5-Hydroxymethylfurfural electrooxidation reaction (HMFOR) is a promising route to produce value-added chemicals from biomass. Since it involves HMF adsorption and C-H/O-H cleavage, understanding the adsorption behavior and catalytic process of organic molecules on catalysts is important. Herein, the selective adsorption sites of NiMoO are tuned by Ni particles for HMFOR-assisted H2 production. Experimental and theoretical calculation results indicate that the synergistic interaction between Ni and NiMoO optimizes the adsorption/desorption of HMF/intermediates/2,5-furandicarboxylic acid (FDCA) and promotes the C-H/O-H bond cleavage, thereby improving the HMFOR kinetics (kNiMoO-Ni/kNiMoO = 1.97) and FDCA selectivity (99.3%). When coupled as a two-electrode system, it can drive efficient HMF conversion (FDCA yield: 98.5%) and H2 production (Faradaic efficiency: 99.1%) at 1.45 V. This work thus offers a strategy to tune the adsorption sites of catalyst for efficient HMFOR-assisted H2 production.

Key words: 5-Hydroxymethylfurfural electrooxidation, Hydrogen evolution reaction, Kinetics, Nanowires, Catalyst