植根型金属支相互作用促进了酸性介质中的氧进化反应
Wenjuan Wang1,2,3,4, Cheng Li4,5, Chuan Zhou2,4
1School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, China.
Angewandte Chemie (International ed. in English)
|April 23, 2024
概括
这项研究介绍了一种创新的根深蒂固的氧化物/氧化物 (Ir/WO3) 催化剂. 这种新的催化剂设计增强了金属支相互作用,在异质催化中提供了卓越的性能,特别是氧气演化反应.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 电化学 电化学 电化学
背景情况:
- 支持的金属催化剂对于异质催化是至关重要的.
- 优化金属支相互作用 (MSI) 是催化剂效率的关键.
- 在固定金属纳米颗粒的过程中存在挑战,同时最大限度地提高活性部位.
研究的目的:
- 开发一种具有增强金属支相互作用的新型支金属催化剂.
- 为了调查前所未有的"根深蒂固型"金属支相互作用.
- 在酸性介质中改善氧化演化反应的活性和稳定性.
主要方法:
- /黄氧化物 (Ir/WO3) 催化剂的合成.
- 催化剂独特的"根植型"MSI的特征.
- 对氧化演化反应的催化性能的评估.
主要成果:
- Ir/WO3催化剂表现出一种"根植型"的MSI,其中Ir集群集成到WO3网格中.
- 这种植根改变了界面电子密度,优化了氧中间体的吸附.
- 催化剂在酸性介质中表现出高活性和稳定性,用于氧气演变.
结论:
- "根植型"MSI为设计支金属催化剂提供了一个新的策略.
- 这种方法有效地平衡了金属固定和活性部位暴露.
- 伊尔/WO3催化剂代表了氧化演化异质催化剂的重大进步.
更多相关视频
09:45Laboratory Simulation of an IronII-rich Precambrian Marine Upwelling System to Explore the Growth of Photosynthetic Bacteria
Published on: July 24, 2016
11.8K
00:13Using Flexible Gold-Titanium Reaction Cells to Simulate Pressure-Dependent Microbial Activity in the Context of Subsurface Biomining
Published on: October 5, 2019
6.7K
相关概念视频
Oxidation-Reduction Reactions
64.9K
Oxidation–Reduction Reactions
64.9K
Redox Titration: Other Oxidizing and Reducing Agents
280
Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
280
Bioremediation
18.3K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.3K
Corrosion
24.1K
The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
24.1K
Redox Equilibria: Overview
564
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
564
Reactivity of Enolate Ions
2.5K
Enolate ions are formed by the acid–base reaction of a carbonyl compound with a base. This leads to deprotonation of the α hydrogen atom, leading to a resonance-stabilized enolate ion where one of the contributing structures is an oxyanion, which imparts additional stability. Therefore, the proton on the α carbon is more acidic in nature than that of other sp3-hybridized C–H bonds but less acidic than those in O–H bonds where the negative charge in the conjugate...
2.5K
