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Updated: Jul 20, 2026

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
Published on: February 10, 2023
Ru Single-Atom Nanoarchitectonics on Co-Based Conducting Metal-Organic Frameworks for Enhanced Oxygen Evolution
Ruyu Xue1, Zhe Feng1, Yantao Wang1
1State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
Ruthenium single-atom modification of Co-HHTP creates a highly efficient electrocatalyst for the oxygen evolution reaction (OER). This advancement is crucial for producing green hydrogen via water electrolysis.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Efficient oxygen evolution reaction (OER) electrocatalysts are critical for green hydrogen production through water electrolysis.
- Developing advanced OER catalysts remains a significant challenge in electrochemistry.
Purpose of the Study:
- To synthesize and characterize ruthenium (Ru) single-atom-modified Co-HHTP (Ru@Co-HHTP) as an OER electrocatalyst.
- To investigate the impact of atomically dispersed Ru on the electronic structure and conductivity of Co-HHTP.
Main Methods:
- Solvothermal synthesis and ion exchange methods were employed to prepare Ru@Co-HHTP.
- Electrochemical performance was systematically evaluated, including overpotential and Tafel slope.
- Stability tests were conducted to assess catalyst durability.
Main Results:
- Ru@Co-HHTP exhibited a low overpotential of 247 mV at 100 mA cm⁻² and a Tafel slope of 38.14 mV dec⁻¹.
- The catalyst demonstrated superior performance compared to unmodified Co-HHTP, commercial IrO₂, and previously reported catalysts.
- Atomically dispersed Ru was found to optimize the electronic structure and conductivity of the Co-HHTP support.
Conclusions:
- Ru@Co-HHTP is a highly efficient and stable electrocatalyst for the oxygen evolution reaction.
- This study offers a novel strategy for designing advanced electrocatalysts for green hydrogen production.
- The findings pave the way for future development of efficient OER electrocatalysts.
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