气候变化领域集成服务门户(CCPortal): Understanding synergistic metal-oxide interactions of: In situ exsolved metal nanoparticles on a pyrochlore oxide support for enhanced water splitting

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DOI	10.1039/d0ee02935a
	Understanding synergistic metal-oxide interactions of: In situ exsolved metal nanoparticles on a pyrochlore oxide support for enhanced water splitting
	Kim M.; Park J.; Ju H.; Kim J.Y.; Cho H.-S.; Kim C.-H.; Kim B.-H.; Lee S.W.
发表日期	2021
ISSN	17545692
起始页码	3053
结束页码	3063
卷号	14 期号:5
英文摘要	Hybrid catalysts consisting of metal nanoparticles on a metal oxide support have emerged as a new class of catalysts that can improve various electrocatalytic reactions, but the origin of the improved performance is still unclear. Here we demonstrate that rationally designed hybrid catalysts through the in situ exsolution process of metallic nanoparticles on a B-site Ni-substituted lead ruthenate pyrochlore oxide improve both oxygen evolution reaction and hydrogen evolution reaction activity. A combination of operando X-ray absorption spectroscopy measurements and density functional theory calculations reveals that the generated oxygen and cation vacancies in the pyrochlore oxide support during the in situ exsolution process can decrease the charge-transfer energy, thereby facilitating charge transfer between exsolved metal nanoparticles-oxide support as well as hybrid catalyst-electrolyte. These findings establish a structure-property relationship of complicated hybrid catalysts for efficient water splitting, suggesting a new strategy in designing various hybrid catalysts for other electrochemical reactions. © 2021 The Royal Society of Chemistry.
英文关键词	Catalysts; Charge transfer; Density functional theory; Electrocatalysis; Electrolytes; Hydrogen evolution reaction; Lead oxide; Metals; Oxygen; Oxygen evolution reaction; X ray absorption spectroscopy; Charge transfer energy; Electrocatalytic reactions; Electrochemical reactions; Hydrogen evolution reaction activities; Lead-ruthenate pyrochlore; Metal-oxide interactions; Metallic nanoparticles; Structure property relationships; Metal nanoparticles; catalysis; catalyst; chemical reaction; detection method; electrolyte; heavy metal; in situ measurement; metal; nanoparticle; perforation; performance assessment; polymer
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/190690
作者单位	Department of Hydrogen and Renewable Energy, Kyungpook National University, 80 Daehakro, Daegu, Bukgu, 41566, South Korea; G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States; Aerospace, Transportation and Advanced Systems Laboratory, Georgia Tech Research Institute, Georgia Institute of Technology, Atlanta, GA 30332, United States; Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Hwarang-ro 14-gil 5, Seoul, Seongbuk-gu, 02792, South Korea; Hydrogen Research Department, Korea Institute of Energy Research, 152 Gajeong-ro, Daejeon, Yuseong-gu, 34129, South Korea; Platform Technology Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Daejeon, Yuseong-gu, 34129, South Korea
推荐引用方式 GB/T 7714	Kim M.,Park J.,Ju H.,et al. Understanding synergistic metal-oxide interactions of: In situ exsolved metal nanoparticles on a pyrochlore oxide support for enhanced water splitting[J],2021,14(5).
APA	Kim M..,Park J..,Ju H..,Kim J.Y..,Cho H.-S..,...&Lee S.W..(2021).Understanding synergistic metal-oxide interactions of: In situ exsolved metal nanoparticles on a pyrochlore oxide support for enhanced water splitting.Energy & Environmental Science,14(5).
MLA	Kim M.,et al."Understanding synergistic metal-oxide interactions of: In situ exsolved metal nanoparticles on a pyrochlore oxide support for enhanced water splitting".Energy & Environmental Science 14.5(2021).