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引用次数: 0
摘要
亚稳晶体结构难以合成和维持，但通常作为特殊的活性位点，具有改善的功能性质。本文采用适度的晶体转变策略，有效地合成了亚稳的RuO2。通过控制氧化程度，构建了不同的异相Ru/RuO2催化剂。结果表明，亚稳态fcc-Ru/fcc-RuO2异质间相具有较好的晶体结构匹配性能，同时具有较强的水解离能力和对中间体的适当吸附能力，在11.2 mV的低电位下可实现10 mA cm-2的电流密度。本研究为催化剂的晶相设计提供了有效的延伸。
Metastable fcc-Ru/fcc-RuO2 Heterointerphase for Hydrogen Evolution
The metastable crystal structure is difficult to synthesize and maintain but normally acts as special active sites with improved functional properties. Herein, a moderate crystallographic transformation strategy is used to effectively synthesize metastable RuO2. By controlling the degree of oxidation, we constructed different heterophase Ru/RuO2 catalysts. The results show that the metastable fcc-Ru/fcc-RuO2 heterointerphase holds an improved crystal structure matching property accompanied by enhanced water dissociation and appropriate adsorption capacity for intermediates, achieving a current density of 10 mA cm–2 at a low potential of 11.2 mV. This study provides an effective extension for the crystal phase design of catalysts.
期刊介绍：
Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.
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