Related Experiment Video
Updated: Jun 27, 2026
09:41
Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
Published on: May 29, 2018
Multivariate Synergy and Two-Dimensional Confinement: Research Progress and Opportunities of Two-Dimensional
Shan Peng1, Haoyuan Jiang1, Zihao Cheng1
1School of Physics and Electronic-Information Engineering, Hubei Engineering University, Xiaogan 432000, China.
Precision Chemistry
|June 26, 2026
Summary
Two-dimensional high-entropy alloys (2D HEAs) merge high-entropy alloys with 2D materials, offering unique properties. This review details their synthesis, structure, and applications in catalysis and energy storage.
Area of Science:
- Materials Science
- Nanotechnology
- Chemistry
Background:
- Emerging field integrating high-entropy alloys (HEAs) with two-dimensional (2D) materials.
- Combines HEA's compositional tunability and multivariate synergy with 2D materials' quantum confinement and high surface area.
- Significant research interest due to unique properties and potential applications.
Purpose of the Study:
- To comprehensively review recent advances in 2D high-entropy alloys (HEAs).
- To elaborate on fundamental concepts, structural characteristics, and performance advantages of 2D HEAs.
- To provide a systematic reference for future development and application of 2D HEA materials.
Main Methods:
- Literature review of synthesis strategies including chemical vapor deposition, solvothermal methods, template-assisted approaches, and space-confined chemical vapor transport.
- Critical analysis of the strengths and limitations of various synthesis methods.
- Detailed analysis of key structural features: crystal structure, elemental distribution, and surface morphology.
Main Results:
- Summarizes advances in 2D HEA synthesis, structure, and properties.
- Highlights promising applications in electrocatalysis (HER, OER, ORR), energy storage (batteries, supercapacitors), sensing, and organic catalysis.
- Identifies key structural features influencing material performance.
Conclusions:
- 2D HEAs represent a promising material system with diverse applications.
- Further research is needed to address current challenges and unlock full potential.
- This review serves as a comprehensive guide for researchers in the field.
Related Concept Videos
01:182D NMR: Overview of Heteronuclear Correlation Techniques
Heteronuclear correlation spectroscopy is an analytical technique that investigates the coupling between different types of nuclei, often a proton and an X-nucleus, such as carbon-13 or nitrogen-15. This method is commonly used in nuclear magnetic resonance (NMR) spectroscopy to gain insights into complex chemical compounds' structural and compositional aspects. A typical heteronuclear correlation spectrum displays X-nucleus chemical shifts on one axis and a proton spectrum on the other axis.
01:12Two-Dimensional (2D) NMR: Overview
The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse.
01:162D NMR: Overview of Homonuclear Correlation Techniques
Homonuclear correlation spectroscopy (COSY) is a powerful technique used in Nuclear Magnetic Resonance (NMR) spectroscopy to study the correlations between nuclei of the same type within a molecule. It provides information about scalar couplings between adjacent nuclei, which helps determine connectivity and structural information. There are several COSY variants, each with its unique strengths and experimental parameters.
COSY90 is the standard two-dimensional (2D) COSY experiment that...
COSY90 is the standard two-dimensional (2D) COSY experiment that...
02:54Trends in Lattice Energy: Ion Size and Charge
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
01:29Three-Dimensional Analysis of Strain
Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
01:20Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...