Ultralow-Concentration Pt-Decorated Carbon Sphere Catalyst for Enhanced Hydrogen Evolution Reaction
Naveen Kumar Reddy Bogireddy1, Mohan Kumar Kesarla1, Ana Laura Elías2
1Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos C.P. 62210, Mexico.
ACS Omega
|December 2, 2024
Summary
Ultralow platinum nanoparticle (Pt NP) decorated carbon spheres (CS) show enhanced hydrogen evolution performance. These Pt-CS hybrids offer stability for renewable energy and water purification applications.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Developing efficient electrocatalysts is crucial for renewable energy.
- Carbon-based materials offer a promising platform for catalyst support.
- Platinum nanoparticles (Pt NPs) are highly effective but costly catalysts.
Purpose of the Study:
- To develop ultralow platinum nanoparticle decorated carbon spheres (Pt-CS) for enhanced hydrogen evolution.
- To investigate the structural and electrochemical properties of the novel Pt-CS hybrid.
- To assess the stability and potential applications of the developed catalyst.
Main Methods:
- Hydrothermal treatment and chemical reduction were used to synthesize Pt-CS hybrids.
- X-ray photoelectron spectroscopy confirmed Pt NP decoration.
- X-ray diffraction and transmission electron microscopy analyzed structure and distribution.
- Electrochemical testing evaluated hydrogen evolution reaction (HER) performance.
Main Results:
- Ultralow Pt NP decoration (0.32 wt%) on CS was achieved.
- Uniform distribution and crystallinity of Pt NPs were confirmed.
- Pt-CS hybrids exhibited an onset potential of -144 mV for HER in acidic medium.
- The catalyst demonstrated superior performance and stability over 200 cycles.
Conclusions:
- The developed Pt-CS hybrid is a highly efficient and stable catalyst for hydrogen evolution.
- This material shows potential for applications in water purification and renewable energy.
- Ultralow noble metal loading can lead to high-performance catalytic systems.
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