吸附
材料科学
电解质
氢
5-羟甲基糠醛
溢出效应
无机化学
化学
化学工程
催化作用
有机化学
物理化学
电极
工程类
经济
微观经济学
作者
Yandong Wu,Yimin Jiang,Wei Chen,Yan Xu,Chung‐Li Dong,Mengyi Qiu,Ta Thi Thuy Nga,Ming Yang,Zhongcheng Xia,Chao Xie,Lei Xu,Ruiqi Wang,Shuangyin Wang,Yuqin Zou
标识
DOI:10.1002/adma.202307799
摘要
5-Hydroxymethylfurfural (HMF), one of the essential C6 biomass derivatives, has been deeply investigated in electrocatalytic reduction upgrading. Nevertheless, the high product selectivity and rational design strategy of electrocatalysts for electrocatalytic HMF reduction is still a challenge. Here, a high selective electro-reduction of HMF to dimethylfuran (DMF) on palladium (Pd) single atom loaded on titanium dioxide (Pd SA/TiO2 ) via hydrogen spillover and adsorption configuration adjustment in neutral electrolytes is achieved. Combining density functional theory calculations and in situ characterization, it is revealed that Pd single atom could weaken the interaction between Pd atoms and adsorbed hydrogen (*H) to promote the *H spillover for increasing *H coverage on the surface and maintain the tilted adsorption configuration to activate C═O bond; thus the selectivity of DMF on Pd SA/TiO2 increases to 90.33%. Besides, it is elaborated that low *H coverage on TiO2 favors the formation of bis(hydroxymethyl)hydro-furoin (BHH), and the flat adsorption configuration of HMF on Pd nanoparticles benefits to form 2,5-dihydroxymethylfuran (DHMF). This work provides a promising approach for modifying electrocatalysts to realize the selective electroreduction of HMF to value-added products.
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