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Updated: Jan 22, 2026
07:47
Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles
Published on: November 27, 2015
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In Situ Formed Pt3Ti Nanoparticles on a Two-Dimensional Transition Metal Carbide (MXene) Used as Efficient Catalysts
Zhe Li, Zhiyuan Qi, Siwen Wang1
1Department of Chemical Engineering , Virginia Polytechnic Institute and State University , Blacksburg , Virginia 24061 , United States.
Nano Letters
|July 5, 2019
Summary
Platinum-titanium alloy nanoparticles on MXene substrates show enhanced hydrogen evolution reactions (HERs). This efficient catalyst offers high currents at low overpotentials, advancing practical applications for clean energy.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Efficient catalysts for hydrogen evolution reactions (HERs) are crucial for practical applications.
- Low overpotentials and high currents are desired for catalysts in energy applications.
Purpose of the Study:
- To design and synthesize novel platinum-titanium (Pt-Ti) alloy nanoparticles on Ti3C2Tx MXene substrates.
- To investigate the structural transformation and catalytic performance of the synthesized materials for HERs.
Main Methods:
- In situ coreduction of platinum onto Ti3C2Tx MXene.
- In situ X-ray absorption spectroscopy (XAS) for structural analysis.
- Electrochemical testing in acidic media to evaluate HER performance.
- Density functional theory (DFT) calculations for mechanistic insights.
Main Results:
- Pt3Ti intermetallic compound nanoparticles were successfully formed on MXene.
- The catalyst reduced at 550 °C (Pt/Ti3C2Tx-550) exhibited superior HER performance.
- Pt/Ti3C2Tx-550 showed a low overpotential of 32.7 mV and a Tafel slope of 32.3 mV dec⁻¹.
- Mass and specific activities were significantly higher than commercial Pt/Vulcan.
Conclusions:
- MXenes serve as effective platforms for designing advanced electrocatalysts.
- Pt-Ti IMCs on MXenes demonstrate great potential for efficient hydrogen evolution.
- Further research into MXene-supported metal catalysts for various electrocatalytic reactions is warranted.
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