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Related Concept Videos

Catalysis02:50

Catalysis

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The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

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Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
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Updated: Jan 9, 2026

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
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Multilayered Ti3C2Tx MXene as a highly active electrocatalyst for hydrogen evolution reaction.

Balaji Srikanth Ragunath1, B S Krishnaveni2, Karthik Chinnathambi3

  • 1Advanced Nanostructured Materials Laboratory, Department of Physics, School of Electrical & Electronics Engineering (SEEE) SASTRA Deemed to be University, Thirumalaisamudram, Thanjavur 613401, Tamil Nadu, India.

International Journal of Hydrogen Energy
|December 3, 2025
PubMed
Summary
This summary is machine-generated.

Multilayered MXene (ML-Ti3C2Tx) shows enhanced hydrogen evolution reaction (HER) activity. This 2D material demonstrates excellent stability and durability for efficient hydrogen production, outperforming platinum catalysts.

Keywords:
ElectrocatalystHERMAX phaseMultilayered MXeneWater splitting

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Two-dimensional materials are gaining interest as electrocatalysts for the hydrogen evolution reaction (HER).
  • Efficient and stable electrocatalysts are crucial for sustainable hydrogen production.

Purpose of the Study:

  • To investigate the HER activity of multilayered MXene (ML-Ti3C2Tx).
  • To evaluate the stability and durability of ML-Ti3C2Tx as an electrocatalyst for hydrogen production.

Main Methods:

  • Synthesis of ML-Ti3C2Tx via hydrogen fluoride etching of Ti3AlC2 MAX phase.
  • Electrochemical characterization of HER activity, including overpotential and Tafel slope measurements.
  • Long-term stability testing under continuous operation and cycling.

Main Results:

  • ML-Ti3C2Tx exhibited excellent HER activity with a low overpotential (147 mV at 10 mA cm-2) and a Tafel slope of 80 mV dec-1.
  • The material demonstrated superior stability and durability, showing a two-fold increase in HER activity compared to Pt/C over 50 hours and 5,000 cycles.
  • Layered morphology and -O, -F surface terminations contributed to enhanced catalytic performance.

Conclusions:

  • ML-Ti3C2Tx is a promising electrocatalyst for efficient and durable hydrogen production.
  • The unique structural and surface properties of ML-Ti3C2Tx enable high HER activity in acidic media.
  • This research highlights the potential of MXene-based materials for next-generation energy technologies.