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Laser induced trace doping of Pd on Ru nanoparticles for an efficient hydrogen evolution electrocatalyst
Ziang Guo1, Liye Zhu1, Xuan Liu1,2,3,4
1Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, People's Republic of China. zhaoyan@bjut.edu.cn.
Nanoscale
|December 15, 2022
Summary
Trace palladium-doped ruthenium nanoparticles were synthesized for efficient hydrogen evolution reaction (HER) catalysis in alkaline media. Pulsed laser ablation in liquid technology enabled controlled doping, enhancing electrocatalyst performance for water splitting applications.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Efficient electrocatalysts are crucial for alkaline water splitting.
- The hydrogen evolution reaction (HER) is key to producing clean hydrogen fuel.
- Developing stable and active catalysts under alkaline conditions remains a challenge.
Purpose of the Study:
- To synthesize trace palladium-doped ruthenium (Pd-Ru) nanoparticles.
- To investigate their performance as electrocatalysts for the hydrogen evolution reaction (HER).
- To elucidate the mechanism of metal doping using pulsed laser ablation in liquid (PLAL).
Main Methods:
- Pulsed laser ablation in liquid (PLAL) technology for nanoparticle synthesis.
- Controlled doping of ruthenium nanoparticles with trace amounts of palladium.
- Molecular dynamics simulations to understand doping mechanisms.
Main Results:
- Successfully synthesized trace Pd-Ru nanoparticles with efficient HER catalytic activity.
- Observed a nonlinear increase in Pd doping with precursor concentration.
- Demonstrated that slow thermal decomposition of the Pd precursor limits doping levels.
Conclusions:
- Trace Pd doping significantly enhances HER performance of Ru nanoparticles in alkaline media.
- PLAL offers a viable method for fabricating precisely doped nanostructures.
- Understanding doping mechanisms advances the design of advanced laser-based nanostructures for catalysis.
