
Lanthanide-regulating Ru-O covalency optimizes acidic oxygen
2024年6月11日 · Weakening the Ru–O bond covalency can localize O 2 p and Ru 3 d orbitals below Fermi level, inhibiting lattice oxygen’s participation in OER and the formation of oxygen vacancies, thereby...
Electronic structure and Fermi surface of Ru(0 0 0 1) and Ru(1 0 1¯ 0 ...
2013年12月1日 · We study the Fermi surface and the band structure of Ru(0 0 0 1) and, for the first time, Ru(1 0 1 ¯ 0) by high-resolution angle-resolved photoemission spectroscopy using He I α and He II α radiation for excitation. The experimental results, though consistent with published data, show several features that were not observed previously.
Customized reaction route for ruthenium oxide towards ... - Nature
2023年2月15日 · Here we uncover the decisive role of reaction route (including catalytic mechanism and intermediates binding strength) on operational stability of Ru-based catalysts. Using MRuO x (M = Ce 4+, Sn...
Undoped ruthenium oxide as a stable catalyst for the acidic …
2025年1月18日 · In this study, we demonstrate distinct stabilities in Ru oxides during OER and provide direct evidence suggesting factors beyond lattice oxygen participation and Ru site over-oxidation...
钌 - 维基百科,自由的百科全书
釕 liǎo (英語: Ruthenium),是一種 化學元素,其 化學符號 为 Ru, 原子序數 为44, 原子量 為 101.07 u,是在 元素週期表 中 鉑族 的稀有 過渡金屬。 釕與鉑族的其他金屬一樣,對大多數其他化學物質都是惰性的。 1844年,俄籍的波羅的海德意志科學家 卡爾·恩斯特·克勞斯 (英语:Karl Ernst Claus) (Karl Ernst Claus)在 喀山大學 發現了該元素,隨後以 鲁塞尼亚 (Ruthenia)做為此元素的拉丁名稱,以此纪念这个被发现于俄罗斯的元素。 一般而言,釕 …
Strain‐modulated Ru‐O Covalency in Ru‐Sn Oxide Enabling …
2024年1月2日 · In this work, weakened covalency of Ru−O bond was tailored by introducing tensile strain to RuO 6 octahedrons in a binary Ru−Sn oxide matrix, prohibiting the participation of lattice oxygen and the dissolution of Ru, thereby significantly improving the long-term stability.
Quantity effect of heteroatom incorporation on the oxygen …
2024年12月13日 · Research on ruthenium oxide (RuO 2) catalysts as alternatives to Ir-based catalysts for the acidic oxygen evolution reaction (OER) has focused on enhancing activity and stability by incorporating heteroatoms. However, the relationship between the amount of incorporated heteroatom and the OER mechanism remains unclear.
The atomic geometry of oxygen-rich Ru(0001) surfaces: coexistence of (1 ...
2000年10月10日 · Employing the technique of low energy electron diffraction (LEED) in combination with density functional theory (DFT) calculations, we determined the atomic geometry of the oxygen-rich Ru (0001) surface, which was recently shown to be extraordinarily active in the conversion of CO towards CO 2.
Ru(0 0 1)表面的甲烷干重整反应,Journal of Catalysis - X-MOL
使用直接与超高真空系统组合的高压反应器,在700至800 k的温度下,在初始ch 4和co 2压力下,研究了ru(0 0 1)单晶表面上的甲烷干重整。 CH 4 -CO 2反应的范围为50-240 Pa。
Angew:Ru-Sn 氧化物中应变调制的 Ru-O 共价能够在酸性溶液中 …
2024年1月3日 · RuO2是质子交换膜水电解槽阳极材料的基准电催化剂之一。 然而,由于析氧反应(OER)过程中晶格氧和金属溶解的参与,其长期稳定性受到损害。 在这项工作中,格里菲斯大学Huijun Zhao, Porun Liu, 中国科学院合肥物质科学研究院Huajie Yin报道了通过向二元Ru-Sn氧化物基体中的RuO6八面体引入拉伸应变来定制弱化的Ru-O键共价键,阻止晶格氧的参与和Ru的溶解,从而显着提高长期稳定性。 此外,拉伸应变还优化了中间体的吸附能并提高了OER活性。 …