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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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Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
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MXenes as Versatile Materials for Hydrogen Technology and Multifunctional Applications.

Ujwal Shreenag Meda1,2, Om Madan Raikar1,2, Charanya Adaguru Rudregowda1,2

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Chemistry, an Asian Journal
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Two-dimensional MXenes, transition metal carbides and nitrides, offer unique properties for applications in catalysis, energy storage, and sensing. This review covers their fabrication, applications, and challenges for sustainable energy technologies.

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Boron-Nitrogen-based hydridesCarbon NanotubesGrapheneMetal HydridesMetal Organic FrameworksSolid-state hydrogen storage

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Area of Science:

  • Materials Science, Nanotechnology, Electrochemistry

Background:

  • MXenes are 2D transition metal carbides/nitrides with high surface area, hydrophilicity, and conductivity.
  • Their unique properties enable diverse applications in sensing, biomedicine, catalysis, and energy storage.
  • MXenes are at the forefront of hydrogen generation and storage technologies.

Purpose of the Study:

  • To provide a comprehensive overview of MXene discovery, structure, and fabrication.
  • To highlight MXene applications, focusing on electrocatalysis for hydrogen evolution and storage.
  • To discuss MXene-derived photocatalysts for pollutant degradation.

Main Methods:

  • Review of literature on MXene synthesis and characterization.
  • Analysis of MXene properties and their correlation with applications.
  • Exploration of surface modification strategies for property enhancement.
  • Investigation of MXene-derived Z-scheme photocatalysts.

Main Results:

  • MXenes exhibit excellent potential in electrocatalysis for hydrogen evolution reactions.
  • Diverse compositions and surface modifications enhance MXene properties for specific applications.
  • MXene-derived photocatalysts show promise in degrading organic pollutants.
  • Self-restacking and aggregation are identified challenges.

Conclusions:

  • MXenes are promising materials for sustainable energy technologies, particularly in catalysis and storage.
  • Further research is needed to address challenges like scale-up and production costs.
  • Optimizing MXene structures and surface chemistry is key for future development.