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Updated: Jun 25, 2026

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films

Published on: January 17, 2017

Atom-glue stabilized Pt-based intermetallic nanoparticles.

Zhongliang Huang^1,2, Yingru Wang³, Jing Xia⁴

¹State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.

Science Advances

|October 4, 2024

Summary

This summary is machine-generated.

Researchers developed an "atom glue" strategy to prevent platinum-based nanoparticle aggregation in high-temperature catalysis. This method significantly enhances performance in oxygen reduction reactions and fuel cells, maintaining activity over extended use.

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Area of Science:

Materials Science
Catalysis
Electrochemistry

Background:

Platinum-based nanoparticles (NPs) are crucial for catalysis but prone to aggregation and sintering under operational conditions.
Stabilizing these NPs is essential for maintaining catalytic activity and durability.

Purpose of the Study:

To develop a robust strategy for stabilizing platinum-cobalt (PtCo) nanoparticles (NPs) at high temperatures.
To enhance the catalytic performance of PtCo NPs for oxygen reduction reactions (ORR) and fuel cell applications.

Main Methods:

Introduction of an "atom glue" concept involving M-N-C materials and Pt-M-N coordination.
Testing the strategy's versatility with various metals (Zn, Mn, Fe, Ni, Co, Cu) for stabilizing Pt-based NPs.
Evaluating the performance of the stabilized NPs in oxygen reduction reactions and fuel cell cycling.

Main Results:

Demonstrated a stable PtCo NP structure under high temperatures using the "atom glue" strategy.
Achieved a mass activity (MA) of 2.99 A mg_Pt^-1 for ORR over g-Zn-N-C/PtCo.
Maintained 79.3% of the initial MA after 90,000 cycles in a fuel cell, showcasing exceptional durability.

Conclusions:

The "atom glue" strategy provides a versatile and effective method for stabilizing Pt-based NPs.
This approach significantly enhances catalytic performance and durability for ORR and fuel cells.
The findings are expected to stimulate broad interest in stabilizing metal nanoparticles for various applications.