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Related Concept Videos

Reduction of Alkenes: Catalytic Hydrogenation02:13

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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.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

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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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Two-dimensional materials as catalysts, interfaces, and electrodes for an efficient hydrogen evolution reaction.

Yun Seong Cho1, Joohoon Kang1

  • 1School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea. joohoon@skku.edu.

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Summary

Two-dimensional (2D) materials are versatile for hydrogen evolution reaction (HER) catalysis. This review explores their roles as catalysts, electrode supports, and interlayers, highlighting synthesis and future applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Two-dimensional (2D) materials are extensively studied for hydrogen evolution reaction (HER) catalysis due to unique properties.
  • Their atomically thin structure and abundant active sites offer excellent electrocatalytic potential.

Purpose of the Study:

  • To review recent advancements and future outlook of 2D materials in electrocatalytic systems, focusing on HER.
  • To categorize the diverse applications of 2D materials in HER electrode design.

Main Methods:

  • Review of scalable synthesis methods for electrocatalytic-grade 2D materials.
  • Analysis of 2D materials' roles as catalysts, electrode supports, and interlayers.

Main Results:

  • 2D materials function as catalytic layers, conductive electrode layers, and interfacial layers.
  • They serve as templates for nanostructured noble metal growth, enhancing HER efficiency.
  • Categorization into catalytic layer, electrode support, and interlayer highlights their versatility.

Conclusions:

  • 2D materials are crucial components in advanced HER electrocatalytic systems.
  • Their multifaceted roles, from active catalysts to structural templates, drive innovation in HER technology.
  • Further research into scalable synthesis and diverse applications is warranted.