选择性
乙二醇
催化作用
电催化剂
格式化
化学
乙二醛
光化学
材料科学
组合化学
无机化学
有机化学
电极
电化学
物理化学
作者
Zhen Wang,Junhua Li,Qi Zhang,Chao Wu,Hecheng Meng,Ying Tang,Anqi Zou,Yiming Zhang,Rui Ma,Xiang Lv,Zhi Gen Yu,Shibo Xi,Junmin Xue,Xiaogang Wang,Jiagang Wu
标识
DOI:10.1002/anie.202411517
摘要
Ethylene glycol electro‐oxidation reaction (EGOR) on nickel‐based hydroxides (Ni(OH)2) represents a promising strategy for generating value‐added chemicals, i.e. formate and glycolate, and coupling water‐electrolytic hydrogen production. The high product selectivity was one of the most significant area of polyols electro‐oxidation process. Yet, developing Ni(OH)2‐based EGOR electrocatalyst with highly selective product remains a challenge due to the unclear cognition about the EGOR mechanism. Herein, Mn‐doped Ni(OH)2 catalysts were utilized to investigate the EGOR mechanism. Experimental and calculation results reveal that the electronic states of eg* band play an important role in the catalytic performance and the product selectivity for EGOR. Broadening the eg* band could effectively enhance the adsorption capacity of glyoxal intermediates. On the other hand, this enhanced adsorption could lead to reduced side reactions associated with glycolate formation, simultaneously promoting the cleavage of C‐C bonds. Consequently, the selectivity for formate was notably augmented by these enhancements. This work offers new insights into the regulation of catalyst electronic states for improving polyol electrocatalytic activity and product selectivity.
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