Enhancing the Electrocatalytic Oxidation of 5-Hydroxymethylfurfural Through Cascade Structure Tuning for Highly Stable Biomass Upgrading

• DOI: 10.1007/s40820-024-01493-3
• Publication Date: 2024-08-23T10:30:05Z
• Authors: Xiaoli Jiang; Xianhui Ma; Yuanteng Yang; Yang Liu; Yanxia Liu; Lin Zhao; Penglei Wang; Yagang Zhang; Yue Lin; Yen Wei
• Keywords: 5-hydroxymethylfurfural; Hydroxymethylfurfural; Derivative (finance)

Abstract Electrocatalytic 5-hydroxymethylfurfural oxidation reaction (HMFOR) provides a promising strategy to convert biomass derivative high-value-added chemicals. Herein, cascade is proposed construct Pd–NiCo 2 O 4 electrocatalyst by Pd loading on Ni-doped Co 3 and for highly active stable synergistic HMF oxidation. An elevated current density of 800 mA cm –2 can be achieved at 1.5 V, both Faradaic efficiency yield 2,5-furandicarboxylic acid remained close 100% over 10 consecutive electrolysis. Experimental theoretical results unveil that the introduction atoms modulate local electronic structure Ni/Co, which not only balances competitive adsorption OH – species, but also promote Ni 3+ species formation, inducing high indirect activity. We have discovered incorporation facilitates 2+ pre-oxidation electrophilic OH* generation contribute direct process. This work new approach design advanced upgrading.