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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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Updated: Dec 22, 2025

Hydrogen Charging of Aluminum using Friction in Water
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A WS2 Case Theoretical Study: Hydrogen Storage Performance Improved by Phase Altering.

Jing Zhou1, Jiamu Cao2,3, Jianing Shi1

  • 1MEMS Center, Harbin Institute of Technology, Harbin, 150001, China.

Nanoscale Research Letters
|May 9, 2020
PubMed
Summary
This summary is machine-generated.

Phase engineering of tungsten disulfide (WS₂) materials enhances hydrogen storage capabilities. The 1T

Keywords:
First-principlesHydrogen adsorptionHydrogen storageMonolayer WS2Phases

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Area of Science:

  • Materials Science
  • Energy Storage
  • Nanotechnology

Background:

  • Hydrogen is a promising clean energy source, but its widespread adoption is hindered by storage and transport challenges.
  • Two-dimensional (2.D.) materials, with their large surface areas and unique electronic properties, show potential for hydrogen storage applications.
  • Monolayer 2H-tungsten disulfide (WS₂) has shown promise for hydrogen storage, but research on other WS₂ phases is limited.

Purpose of the Study:

  • To investigate hydrogen adsorption and storage capabilities across all three phases of tungsten disulfide (WS₂): 2H, 1T, and 1T'.
  • To compare the hydrogen storage performance of different WS₂ phases and identify the most promising candidate for future applications.
  • To explore the potential of phase engineering as a strategy for enhancing hydrogen storage in two-dimensional materials.

Main Methods:

  • First-principle calculations were employed to simulate and analyze hydrogen adsorption on WS₂ surfaces.
  • Systematic investigation of hydrogen adsorption behavior across different WS₂ phases.
  • Evaluation of hydrogen storage capacity based on adsorption characteristics.

Main Results:

  • First-principle calculations reveal distinct hydrogen adsorption behaviors across the 2H, 1T, and 1T' phases of WS₂.
  • The 1T' phase of WS₂ demonstrates superior hydrogen storage performance compared to the more studied 2H phase.
  • Adsorption studies indicate that phase engineering of WS₂ can significantly improve its hydrogen storage capacity.

Conclusions:

  • Phase engineering of tungsten disulfide (WS₂) is an effective strategy to enhance hydrogen storage performance.
  • The 1T' phase of WS₂ exhibits promising potential for efficient hydrogen storage applications.
  • This study provides a foundational reference for future research into two-dimensional materials for hydrogen storage.