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Related Experiment Video

Updated: Jan 25, 2026

Studying Copper Nanoparticle-Induced Programmed Cell Death in Bacteria

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Published on: May 16, 2025

High-performance hydrogen evolution reaction catalysis achieved by small core-shell copper nanoparticles.

Cheng Liu¹, Huilong Dong², Yujin Ji¹

¹Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, China.

Journal of Colloid and Interface Science

|May 11, 2019

Summary

This summary is machine-generated.

Osmium-copper core-shell nanoparticles show promise for hydrogen evolution reactions (HER). These catalysts offer efficient hydrogen adsorption and generation, making them suitable for electro-catalysis.

Keywords:

Competing effects Core-shell nanoparticle First-principles calculations Hydrogen evolution reaction

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Area of Science:

Materials Science
Computational Chemistry
Electrochemistry

Background:

Hydrogen evolution reaction (HER) is crucial for clean energy production.
Developing efficient electro-catalysts is key to advancing HER technology.
Copper-based nanoparticles offer potential but require optimization for enhanced activity.

Purpose of the Study:

To investigate the HER catalytic activity of copper-based core-shell nanoparticles (CSNPs).
To explore the influence of different core materials (Fe, Ru, Os) on CSNP performance.
To identify optimal CSNP structures for efficient hydrogen adsorption and generation.

Main Methods:

First-principles calculations were employed to study CSNPs.
Structural parameters, stability, and electronic properties of Cu55 NPs and Mx@Cu55-x CSNPs were analyzed.
Hydrogen adsorption energies and reaction barriers were computed.

Main Results:

Competing effects influence hydrogen atom binding on NP surfaces.
Core size and atom composition impact hydrogen adsorption through charge transfer and surface expansion.
Os13@Cu42 CSNPs demonstrated superior HER performance with optimal H adsorption (-0.20 eV) and low Gibbs free energy (0.03 eV).

Conclusions:

Os13@Cu42 CSNPs are highly promising electro-catalysts for HER.
The study provides insights into designing efficient HER catalysts by tuning core-shell structures.
Understanding competing effects is vital for optimizing catalytic activity.