电合成
材料科学
纳米技术
格式化
电化学
有机化学
催化作用
物理化学
电极
化学
作者
Haoling Huang,Xue Ding,Xinnan Mao,Yuchen Yan,Fang Lv,Binbin Pan,Wei Huang,Lu Wang,Na Han,Yanguang Li
标识
DOI:10.1002/adfm.202408966
摘要
Abstract Liquid metals are an interesting class of materials with the unique combination of metallic nature and liquid fluidity, and have recently been explored in many emerging fields. Their potential applications in catalysis, unfortunately, remain largely untapped. Herein, Ga‐mediated liquid metal alloying as an effective strategy is demonstrated to prepare functional alloys for catalysis. The alloying is carried out by dissolving indium or tin pellets in liquid gallium at room temperature or assisted by gentle heating, giving rise to binary Ga 1− x In x and Ga 1− x Sn x liquid metal alloys with tunable chemical compositions. When further subjected to ultrasonication in water, they are ruptured into nanosized particles with liquid metal cores and thin surface oxide shells. Electrochemical measurements reveal that the liquid metal alloying significantly promotes electrocatalytic CO 2 reduction to formate. Taking Ga 0.75 In 0.25 as an example, its formate Faradaic efficiency is enhanced by 10%–20% compared to those of Ga and In, and its formate partial current density is 4–6 times larger than those of Ga and In. This enhancement is rationalized via computational simulations showing that the surrounding of In active sites with Ga atoms deactivates the undesirable reaction pathways to CO or H 2 , and facilitates selective formate electrosynthesis.
科研通智能强力驱动
Strongly Powered by AbleSci AI