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Electrochemical oxidation of 5-hydroxymethylfurfural on ternary metal-organic framework nanoarrays: enhancement from electronic structure modulation

The rational design and exploitation of highly active and stable catalysts for the electrochemical oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) to valuable chemical 2,5-furandicarboxylic acid (FDCA), is of great significance. Herein, a ternary metal-organic framework nanoarray is in si...

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Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2021-06, Vol.9 (25), p.1427-14275
Main Authors: Bai, Xiao-Jue, He, Wen-Xiu, Lu, Xing-Yu, Fu, Yu, Qi, Wei
Format: Article
Language:English
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Summary:The rational design and exploitation of highly active and stable catalysts for the electrochemical oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) to valuable chemical 2,5-furandicarboxylic acid (FDCA), is of great significance. Herein, a ternary metal-organic framework nanoarray is in situ hydrothermally deposited on Ni foam via assembling of multiple metal ions (Co 2+ , Ni 2+ and Fe 2+ ) and 2-amino-terephthalic acid. The integrated MOF composite can directly act as a catalytic electrode, which exhibits excellent electrocatalytic HMF oxidation activity with a high current density of 100 mA cm −2 at a potential of only 1.35 V vs. RHE. More importantly, the constant potential electrolysis at 1.4 V vs. RHE in combination with chromatographic analysis reveals a high faradaic efficiency close to 100% towards the production of FDCA with a yield of 99.76%. The high electrocatalytic performance for HMF oxidation is attributed to the abundant accessible active sites of two-dimensional morphology and the optimized electronic structure of the intrinsic catalytic centers in MOFs. The present study sheds light on the rational design and synthesis of new MOF-based catalysts for biomass conversion and stimulate the extensive explorations of MOFs with tunable active sites for potential electrocatalysis applications. A facile one-step solvothermal strategy has been developed for the in situ growth of ternary MOF nanoarrays onto Ni foam, which exhibits superior electrocatalytic activity and stability for the electrochemical 5-hydroxymethylfurfural oxidation.
ISSN:2050-7488
2050-7496
DOI:10.1039/d1ta02464g