Related Experiment Video
Updated: Aug 6, 2026
06:39
Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source
Published on: October 20, 2023
Reactant-Sustained Dynamically Stable Interfacial Hydrogen-Bond Network for Highly Selective, Ampere-Level Ethylene
Li Yuan1, He Zhang1, Xuesong Liu1
1School of Chemical Engineering, Sichuan University, Chengdu, P. R. China.
Angewandte Chemie (International Ed. in English)
|July 17, 2026
Summary
A novel metal-organic framework (MOF) electrocatalyst (Co-PET@NF) creates a unique hydrogen-bond network for efficient ethylene glycol electrooxidation (EGOR). This advanced catalyst achieves high selectivity and stability, offering a sustainable pathway for biomass upgrading.
Area of Science:
- Electrochemistry
- Materials Science
- Catalysis
Background:
- The catalyst-electrolyte interface is crucial for electrochemical reactions, but dynamic stability and efficient proton transfer are challenging at high current densities.
- Engineering stable interfaces for continuous reactant supply and proton-coupled electron transfer is key for advanced electrocatalysis.
Purpose of the Study:
- To develop a highly selective electrocatalyst for ethylene glycol electrooxidation (EGOR) using a metal-organic framework (MOF).
- To investigate the role of interfacial hydrogen-bond networks in enhancing catalyst activity and stability.
Main Methods:
- Fabrication of an ultrathin MOF-derived electrocatalyst (Co-PET@NF).
- Electrochemical characterization of ethylene glycol electrooxidation (EGOR) performance.
- Mechanistic studies using in-situ techniques to probe interfacial interactions and hydrogen-bond network dynamics.
Main Results:
- Co-PET@NF demonstrated high selectivity for formate production (FEFA = 92.8%) at 1.0 A cm-2 due to enhanced ethylene glycol adsorption and a stable hydrogen-bond network.
- The catalyst facilitated rapid proton transfer and maintained a localized alkaline surface microenvironment, crucial for stability.
- In a coupled system, Co-PET@NF reduced cell voltage by 260 mV at 1.0 A cm-2 compared to water electrolysis and showed stable operation for 120 h.
Conclusions:
- The reactant-enhanced hydrogen-bond network strategy is effective for stabilizing interfaces and improving selectivity in electrocatalysis.
- This MOF-based approach offers a sustainable method for biomass and plastic upgrading through efficient alcohol electrooxidation.
- The findings highlight the importance of interfacial engineering for designing next-generation electrocatalysts.
Related Concept Videos
02:34Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration
The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.
02:50Catalysis
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
01:27Catalysis
Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...
01:30Processes at Electrodes
The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
02:04Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids
Diols are compounds with two hydroxyl groups. In addition to syn dihydroxylation, diols can also be synthesized through the process of anti dihydroxylation. The process involves treating an alkene with a peroxycarboxylic acid to form an epoxide. Epoxides are highly strained three-membered rings with oxygen and two carbons occupying the corners of an equilateral triangle. This step is followed by ring-opening of the epoxide in the presence of an aqueous acid to give a trans diol.