Highly recyclable and efficient electrocatalytic synthesis of adipic acid catalyzed by ultra-alkali-resistant [Ni36] nanocages in MOF

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ID: 320690
2026
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Abstract
Abstract As a pivotal industrial chemical, adipic acid (AA) is synthesizable through the electrocatalytic oxidation of cyclohexanol under ambient conditions, utilizing electrons as a clean oxidant. This approach circumvents the energy-intensive and environmentally detrimental nature of conventional petrochemical processes, thereby offering a sustainable alternative for AA production. However, existing electrocatalysts are often plagued by instability in alkaline media, and their structure-activity relationships remain poorly understood. Here, we report a novel [Ni36] nanocage-based metal-organic framework ([Ni9]-MOF) synthesized via a bottom-up strategy from discrete [Ni9]-clusters, exhibiting excellent stability in both strong alkaline (8 M NaOH) and acidic (1 M HCl) conditions. [Ni9]-MOF demonstrates superior AA production (0.1239 mmol h−1 cm−2 at 1.61 V), and maintains this high activity 25 cycles with negligible loss, surpassing all prior high-performance catalysts in durability. Mechanistic studies reveal a three-step oxidation pathway via cyclohexanone, 2-hydroxycyclohexanone, and 6-hydroxyadipic acid. DFT calculations indicate the MOF framework enhances the charge density at the active [Ni9] site, accelerating reaction kinetics. This work not only provides a rational design strategy for constructing highly stable MOFs, but also presents the first MOF-based electrocatalyst for AA synthesis, opening new avenues for sustainable chemical production under mild conditions.
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Authors Ze‐Long Liang, R K Li, Zi Wang, J. Lv, Xin-Min Ai, Qi Li, Ying‐Ying Yu, Yue Wang, Fang-Ting ZHU, Qi-Fan Wang, HF Xu, Bin Zhao
Journal national science review
Year 2026
DOI
10.1093/nsr/nwag427
URL
https://doi.org/10.1093/nsr/nwag427
Keywords Keywords not found

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