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Related Experiment Video

Updated: Jun 3, 2025

Using Q Suture to Enhance Resistance to Gap Formation and Tensile Strength of Repaired Flexor Tendons

Using Q Suture to Enhance Resistance to Gap Formation and Tensile Strength of Repaired Flexor Tendons

Published on: June 3, 2020

Single-Atom Suture.

Chenyang Wang¹, Xiang Li¹, Erli Ni²

¹College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.

|January 8, 2025

Summary

This summary is machine-generated.

Platinum single-atom chains suture grain boundaries in 2D materials, transforming semiconducting to metallic electronic properties. This innovation enhances catalytic activity for hydrogen evolution reactions.

Keywords:

grain boundaries hydrogen evolution reaction single-atom chains the sutured electron pathway transition metal dichalcogenides

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Area of Science:

Materials Science
Nanotechnology
Catalysis

Background:

Grain boundaries (GBs) in 2D materials significantly impact electronic properties due to disordered atomic structures.
This disorder can negatively affect electron transport and material performance.
Developing strategies to control GB electronic environments is crucial for advanced applications.

Purpose of the Study:

To investigate the use of one-dimensional (1D) platinum (Pt) single-atom chains (SAS) to modify the electronic structure at GBs in transition metal dichalcogenides (TMDCs).
To explore the potential of Pt SAS in enhancing catalytic activity, specifically for the hydrogen evolution reaction (HER).

Main Methods:

Synthesis of Pt single-atom chains on diversified TMDCs.
Theoretical calculations (e.g., DFT) to analyze electronic structure modifications at GBs.
Electrocatalytic testing for hydrogen evolution reaction (HER) to evaluate catalytic performance.

Main Results:

Pt SAS effectively suture electron pathways at TMDC grain boundaries.
Emergence of electronic states near the Fermi level, transforming semiconducting to metallic behavior.
Pt SAS-MoS2 demonstrated excellent HER catalytic activity with a low overpotential (41 mV at 10 mA cm⁻²) and Tafel slope (54 mV dec⁻¹).

Conclusions:

Ultra-ordered atomic arrangement in Pt SAS can precisely reconfigure electron conduction pathways.
Pt SAS offer an innovative mechanism for designing next-generation catalysts with optimized architectures.
This work provides fundamental insights into controlling electronic properties at grain boundaries in 2D materials.