焦绿石
离子半径
析氧
镧系元素
材料科学
催化作用
无机化学
电催化剂
结构精修
氧气
铈
钌
晶体结构
化学
物理化学
电化学
结晶学
离子
有机化学
电极
相(物质)
作者
Aika Matsumoto,Ze-Xing Cai,Takeshi Fujita
出处
期刊:Materials
[MDPI AG]
日期:2022-09-02
卷期号:15 (17): 6107-6107
被引量:6
摘要
A versatile synthesis method for pyrochlore oxides containing Ir and Ru with lanthanides Pr, Nd, Eu, Gd, Tb, and Ho is herein presented. Based on the systematic synthesis and Rietveld refinement results, the lattice constants were tunable depending on the ionic radius of the lanthanide used. Subsequently, Pr-based pyrochlore oxides containing Ru and Ir in different ratios were fabricated for the oxygen evolution reaction (OER) in alkaline media, and the OER activity of these catalysts increased when the content of Ir and Ru was the same. Thus, the co-substitution of Ir and Ru in pyrochlore oxides is a novel synthesis strategy for electrocatalysts, which provides great potential for the fabrication of other pyrochlore oxides with various architectures and compositions for application in electrocatalysis.
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