气候变化领域集成服务门户(CCPortal): Interfacial water shuffling the intermediates of hydrogen oxidation and evolution reactions in aqueous media

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DOI	10.1039/d0ee01754j
	Interfacial water shuffling the intermediates of hydrogen oxidation and evolution reactions in aqueous media
	Liu E.; Jiao L.; Li J.; Stracensky T.; Sun Q.; Mukerjee S.; Jia Q.
发表日期	2020
ISSN	17545692
起始页码	3064
结束页码	3074
卷号	13 期号:9
英文摘要	The kinetics of the hydrogen oxidation and evolution reactions (HOR/HER) of platinum in aqueous solutions remains elusive, partly because of the lack of means to explore the surface-electrolyte interface. Herein, we probe this interface by utilizing surface transition metals (TMs), carbon monoxide, alkali metal cations (AM+), and heavy water in combination with in situ X-ray absorption spectroscopy. It was found that the surface TMs in the metallic phase may boost the HOR kinetics of Pt in alkali by hosting the interfacial water with the oxygen-down orientation that removes the adsorbed hydrogen on Pt neighbors. Furthermore, surface TMs in either metallic or hydroxide phases improve the HER kinetics of Pt by hosting the hydroxyl generated from water dissociation so it can be desorbed by the interfacial water coordinated to AM+. The roles of interfacial water in shuffling the HOR/HER intermediates throughout the interface are supported by kinetic isotope effects. This journal is © The Royal Society of Chemistry.
英文关键词	Carbon monoxide; Electrolytes; Heavy water; Hydrogen; Kinetics; Platinum; Reaction intermediates; Transition metals; Water absorption; X ray absorption spectroscopy; Alkali metal cations; Electrolyte interfaces; Evolution reactions; Hydrogen oxidation; In-situ X-ray absorption spectroscopy; Kinetic isotope effects; Surface transitions; Water dissociation; Phase interfaces; aqueous solution; buffering; concentration (composition); hydrogen; oxidation; reaction kinetics
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189551
作者单位	Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States; Department of Chemical Engineering, Northeastern University, Boston, MA 02115, United States
推荐引用方式 GB/T 7714	Liu E.,Jiao L.,Li J.,et al. Interfacial water shuffling the intermediates of hydrogen oxidation and evolution reactions in aqueous media[J],2020,13(9).
APA	Liu E..,Jiao L..,Li J..,Stracensky T..,Sun Q..,...&Jia Q..(2020).Interfacial water shuffling the intermediates of hydrogen oxidation and evolution reactions in aqueous media.Energy & Environmental Science,13(9).
MLA	Liu E.,et al."Interfacial water shuffling the intermediates of hydrogen oxidation and evolution reactions in aqueous media".Energy & Environmental Science 13.9(2020).