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Related Concept Videos

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.
Imperfections in Crystal Structure: Non-Stoichiometric Defects01:29

Imperfections in Crystal Structure: Non-Stoichiometric Defects

Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...
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...

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Updated: Jun 28, 2026

Atomically Traceable Nanostructure Fabrication
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Defect Engineering of Metal-Based Atomically Thin Materials for Catalyzing Small-Molecule Conversion Reactions.

Juanjuan Huo1, Yuhai Dou1, Chao Wu1

  • 1Institute of Energy Materials Science, University of Shanghai for Science and Technology, Shanghai, 200093, China.

Advanced Materials (Deerfield Beach, Fla.)
|December 21, 2024
PubMed
Summary

Defect engineering in metal-based atomically thin materials (M-ATMs) enhances catalytic activity for energy conversion reactions. Strategies like vacancy creation and doping boost performance and stability for sustainable molecule recycling.

Keywords:
atomically thin materialsdefect engineeringelectrochemical conversionmechanism studystructure‐activity relations

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Metal-based atomically thin materials (M-ATMs) offer large surface areas and active sites, ideal for energy conversion.
  • Limitations include insufficient active sites and slow kinetics, hindering electrocatalytic performance.
  • Defect engineering is a key strategy to overcome these limitations.

Purpose of the Study:

  • To comprehensively review defect engineering strategies for M-ATMs.
  • To highlight advancements in M-ATM applications for electrochemical small molecule conversion.
  • To establish the link between atomic structure evolution and catalytic activity.

Main Methods:

  • Vacancy creation
  • Heteroatom doping
  • Amorphous phase/grain boundary generation
  • Heterointerface construction

Main Results:

  • Defect engineering significantly increases active sites and enhances electronic structure.
  • M-ATMs with engineered defects show improved reactivity and stability in reactions like H2, O2, CO2, N2, and S conversion.
  • Analysis reveals dynamic structural evolution is crucial for catalytic activity.

Conclusions:

  • Defect engineering is vital for developing high-performance M-ATM catalysts.
  • These catalysts contribute to a circular economy through efficient molecule recycling.
  • Further research is needed to address challenges and unlock full potential.