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Updated: Feb 5, 2026

Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation

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Published on: August 15, 2019

Mesoporous Pd@Ru Core-Shell Nanorods for Hydrogen Evolution Reaction in Alkaline Solution.

Yiqi Luo, Xuan Luo, Geng Wu

¹National Synchrotron Radiation Laboratory (NSRL) , University of Science and Technology of China , Hefei , Anhui 230029 , China.

ACS Applied Materials & Interfaces

|September 14, 2018

Summary

Mesoporous palladium-ruthenium (Pd@Ru) core-shell nanorods were synthesized. These nanostructures show enhanced activity and stability for hydrogen evolution reactions, offering a promising advancement in catalysis.

Keywords:

core−shell electrocatalysis element diffusion mesoporous ruthenium

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Area of Science:

Materials Science
Nanotechnology
Catalysis

Background:

Bimetallic nanocatalyst performance is dictated by structure, composition, and interfaces.
Tailoring these properties is crucial for advancing catalytic applications.

Purpose of the Study:

To synthesize mesoporous palladium-ruthenium (Pd@Ru) core-shell nanorods.
To investigate their structural characteristics and catalytic activity for hydrogen evolution reactions.

Main Methods:

Synthesis of Pd@Ru core-shell nanorods with controlled mesoporosity.
Characterization using high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM).
Analysis of elemental diffusion via energy-dispersive X-ray spectroscopy (EDX) mapping and synchrotron radiation photoemission spectroscopy (SRPES).

Main Results:

Successful synthesis of mesoporous Pd@Ru nanorods with distinct cavity sizes (3.0 ± 0.9 nm and 20.3 ± 8.1 nm).
Detailed characterization confirmed the core-shell structure and revealed mutual diffusion between Pd and Ru.
Demonstrated superior catalytic performance and stability for hydrogen evolution reactions (HER) in both alkaline and acidic media.

Conclusions:

The unique mesoporous core-shell structure of Pd@Ru nanorods enhances catalytic efficiency.
These nanorods offer excellent stability, making them promising electrocatalysts for hydrogen production.