Enhanced proton-feeding kinetics of metal-organic framework toward industrial-level H2O2 electrosynthesis for sustainable bleaching

Fanpeng Cheng, Yingnan Liu, Zilin Zhao, Xiaoxuan Yang, Wanzhen Zheng, Bin Yang, Zhongjian Li, Qinghua Zhang, Chung-Li Dong, Lecheng Lei, Liming Dai and Yang Hou ()
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Fanpeng Cheng: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering
Yingnan Liu: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering
Zilin Zhao: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering
Xiaoxuan Yang: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering
Wanzhen Zheng: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering
Bin Yang: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering
Zhongjian Li: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering
Qinghua Zhang: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering
Chung-Li Dong: Tamkang University, Department of Physics
Lecheng Lei: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering
Liming Dai: University of New South Wales, Center of Advanced Carbon Materials, School of Chemical Engineering
Yang Hou: Zhejiang University, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering

Nature Communications, 2025, vol. 16, issue 1, 1-12

Abstract: Abstract Eco-friendly electrocatalytic production of alkaline H2O2 via the two-electron oxygen reduction reaction offers a promising alternative to the conventional anthraquinone process, which is energy-intensive and poses explosion risks. However, the industrial adoption of this approach is hindered by sluggish proton-feeding kinetics of heterogeneous electrocatalysts, which restricts the achievable current densities. Herein, we develop Ni-based metal-organic frameworks with a bio-inspired B-coordination (B-NiBDC). The B-NiBDC shows Faradaic efficiency of ~90% for H2O2 electrosynthesis at 1000 mA cm−2, obtaining ~7.49 wt.% H2O2 alkaline solution for bleaching under urea oxidation-assisted energy-saving system. This has led to a significant increase in pulp brightness by 25-39 % (International Organization for Standardization, ISO). We propose that B-O-Ni motifs of B-NiBDC induce the formation of electron-deficient Ni active sites. Experiments and theoretical calculations elucidate that the electron-deficient Ni has accelerated water dissociation kinetics for proton-feeding to produce *OOH intermediate with suitable adsorption energy, boosting overall H2O2 electrosynthesis activity.

Date: 2025
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DOI: 10.1038/s41467-025-65276-z

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