Electrocatalytic oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid via metal-organic framework-structured hierarchical Co3O4 nanoplate arrays

文献类型： 外文期刊

第一作者： Feng, Yixuan

作者： Feng, Yixuan;Qi, Xinhua;Guo, Haixin;Smith Jr, Richard L.

作者机构：

关键词： 5-Hydroxymethylfurfural; 2,5-Furandicarboxylic acid; Electrocatalytic oxidation; ZIF-L-Co; Hierarchical porous Co(3)O4

期刊名称：JOURNAL OF COLLOID AND INTERFACE SCIENCE （ 影响因子：9.9； 五年影响因子：8.4 ）

ISSN： 0021-9797

年卷期： 2023 年 632 卷

页码：

收录情况： SCI

摘要： Electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) was examined as an alternative to thermocatalytic methods in which two-dimensional (2D) cobalt-metal-organic framework (Co-MOF, ZIF-L-Co) nanoplate arrays were prepared on nickel foam (NF) and then transformed into hierarchical porous Co3O4 nanostructures by chemical etching and low temperature annealing to form electrode materials. Hierarchical porous nanoarrays formed during synthesis enlarged the surface area of the as-prepared catalysts introduced a large number of defects and exposed active sites leading to reduced charge diffusion, improved mass transfer and efficient HMF oxidation. Co3O4/NF electrode materials were able to achieve a current density of 10 mA center dot cm(-2) at an overpotential of 105 mV in 1 M KOH with 10 mM HMF, which was reduced by 175 mV compared with water oxidation. Electrocatalytic oxidation experiments afforded 100 % HMF conversion and 96.7 % FDCA yields with a minimum 96.5 % faradaic efficiency at 1.43 V vs RHE. The proposed MOF-structured synthesis method fundamentally reduces charge diffusion, improves mass transfer of electrodes and is generally applicable to fabrication of hierarchical porous nanostructured materials.(c) 2022 Elsevier Inc. All rights reserved.

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