Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
Catalysis02:50

Catalysis

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.
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

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 surface of...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Long-Term Exposure to PM<sub>2.5</sub> Constituents and Coronary Heart Disease Risk in China.

Journal of the American College of Cardiology·2026
Same author

Explainable machine learning for 10-year prediction of cognitive impairment in a rural Chinese population.

NPJ digital medicine·2026
Same author

Sliding Ferroelectricity Driven Spin-Layertronics in Altermagnetic Multilayers.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Triglyceride-glucose index trajectories and the incident risk of type 2 diabetes mellitus in Chinese adults with normal weight: the China-PAR project.

International journal of obesity (2005)·2026
Same author

Associations of oxidative balance score and sleep duration with cognitive impairment in aging adults: a prospective cohort study.

The journal of nutrition, health & aging·2026
Same author

Long-Term Glycemic Exposure, Control Status and Cognitive Function in Older Adults: A Longitudinal Study.

Diabetes, obesity & metabolism·2026

Related Experiment Video

Updated: Jun 27, 2026

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

Evolution from Monolayers to Two-Dimensional Heterostructures for Enhanced Hydrogen Evolution Reaction: A Theoretical

Xiaoxiang Hu1, Zhiwang Sun1, Dongsheng Hu1

  • 1Key Laboratory of Plateau Oxygen and Living Environment of Xizang Autonomous Region, College of Science, Xizang University, Lhasa 850000, China.

Molecules (Basel, Switzerland)
|June 26, 2026
PubMed
Summary

This study explores two-dimensional heterostructures for efficient hydrogen evolution reactions. Several MXene-TMD heterostructures show promising catalytic activity, guided by work function differences for catalyst design.

Keywords:
MXenesTMDselectrocatalyticfirst-principle calculationsvan der Waals heterostructures

More Related Videos

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
04:57

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Published on: July 18, 2025

Related Experiment Videos

Last Updated: Jun 27, 2026

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
04:57

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Published on: July 18, 2025

Area of Science:

  • Materials Science
  • Catalysis
  • Computational Chemistry

Background:

  • Two-dimensional heterostructures offer unique interfacial effects for electrocatalysis.
  • MXenes and TMDs are promising candidates for advanced catalyst design.

Purpose of the Study:

  • To investigate the potential of MXene-TMD heterostructures for hydrogen evolution reactions (HER).
  • To understand the relationship between electronic properties and catalytic performance.
  • To provide theoretical insights for designing efficient HER catalysts.

Main Methods:

  • First-principles density functional theory (DFT) calculations were employed.
  • Systematic investigation of binding energies, structural stability, and electronic structures.
  • Evaluation of hydrogen adsorption Gibbs free energy for HER activity.

Main Results:

  • All constructed heterostructures demonstrated good thermodynamic stability and favorable electronic properties.
  • SnS2/Ti2CO2, SnSe2/Ti2CO2, SnTe2/Ti2CO2, and SnTe2/Zr2CO2 exhibited excellent HER activity.
  • Work function difference was identified as a descriptor for catalytic performance.

Conclusions:

  • The study provides theoretical guidance for designing advanced 2D HER catalysts.
  • The findings contribute to the development of sustainable energy conversion technologies.
  • Experimental validation is needed to confirm the predicted catalytic activity.