Cation vacancies creation propel pre-oxidation enhancing nickel hydroxide activity for highly efficient 5-hydroxymethylfurfural upgrading

Xiaoli Jiang, Xianhui Ma, Yanxia Liu, Lin Zhao, Yagang Zhang*, Bo Quan Li, Qiang Zhang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

8 引用 (Scopus)

摘要

The 5-hydroxymethylfurfural oxidation reaction (HMFOR) is an energy-saving alternative for H2 production due to the low thermodynamic potential. However, the comprehensive investigation into the dehydrogenation pre-oxidation and substrates adsorption on catalyst with vacancy has not been carried out. Herein, we report a unique strategy to create cation vacancies by in situ molybdenum removal in pre-catalyst. The resulting vacancy-enriched VMo-NiOxHy catalyst enables a tripling promotion on current density than the pristine NiOxHy and delivers a much lower onset couple voltage than water splitting. The enhanced performance is attributed to the formation of Ni3+–O active substances induced by the vacancy manipulation pre-oxidation process, the optimized substrate adsorption, and the decorated Nickel electron coordination structure owing to the vacancy creation, which are evidenced by the operando spectroscopy measurements, density functional theory calculations, and X-ray absorption spectroscopy, respectively. This work shines new light on electro-catalysts design for value-added chemicals production via biomass upgrading.

源语言英语
文章编号123785
期刊Applied Catalysis B: Environmental
347
DOI
出版状态已出版 - 15 6月 2024

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Jiang, X., Ma, X., Liu, Y., Zhao, L., Zhang, Y., Li, B. Q., & Zhang, Q. (2024). Cation vacancies creation propel pre-oxidation enhancing nickel hydroxide activity for highly efficient 5-hydroxymethylfurfural upgrading. Applied Catalysis B: Environmental, 347, 文章 123785. https://doi.org/10.1016/j.apcatb.2024.123785