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...
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
Processes at Electrodes01:30

Processes at Electrodes

The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...
Electrodeposition01:08

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

You might also read

Related Articles

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

Sort by
Same author

Rapid Determination of SiO<sub>2</sub> Shell Thickness on Au Core Nanoparticles via Differential Centrifugal Sedimentation for SHINERS.

The journal of physical chemistry. C, Nanomaterials and interfaces·2026
Same author

Template-Confined Synthesis of 1 nm High-Entropy-Alloy Nanoparticle Library for Electrocatalysis.

ACS nano·2026
Same author

Organic Materials of Tomorrow: Horizons of Artificial Intelligence.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

High-Entropy Alloy Nanocrystals: From Synthesis to Characterization and Catalytic Application.

Chemical reviews·2026
Same author

Feature-extracted SERS combined with enhanced machine learning and deep learning for fast screening of COVID-19 inpatients.

Talanta·2026
Same author

Short-Wavelength Infrared Imaging with Organic Photodetectors Based on Non-Fullerene Acceptors with Detection above 1200 nm.

Advanced materials (Deerfield Beach, Fla.)·2026

Related Experiment Video

Updated: Jul 13, 2026

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
09:18

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

Electrochemically Induced Structural Evolution to Generate Optimized High-Entropy-Alloy Electrocatalysts for Ethanol

Yueh-Chun Hsiao1,2, Hansaem Jang1, Chun-Wei Chang2

  • 1Stephenson Institute for Renewable Energy and Department of Chemistry, University of Liverpool, Liverpool, UK.

Angewandte Chemie (International Ed. in English)
|July 11, 2026
PubMed
Summary

High-entropy alloy nanocrystals transform during ethanol oxidation, boosting catalytic activity 8.3-fold. This structural evolution enhances complete ethanol to CO2 conversion for efficient fuel cells.

Keywords:
ethanol oxidation reactionhigh‐entropy‐alloy nanocrystalsstructural reconstructionsurface‐enhanced infrared absorption spectroscopyx‐ray absorption spectroscopy

More Related Videos

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
10:15

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts

Published on: November 7, 2025

Related Experiment Videos

Last Updated: Jul 13, 2026

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
09:18

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
10:15

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts

Published on: November 7, 2025

Area of Science:

  • Electrochemistry
  • Materials Science
  • Catalysis

Background:

  • High-entropy alloys (HEAs) show promise as advanced catalysts.
  • Understanding HEA structural evolution under electrochemical conditions is crucial but underexplored.
  • Ethanol oxidation reaction (EOR) is key for direct alcohol fuel cells.

Purpose of the Study:

  • To investigate the structural evolution of platinum-group HEA nanocubes during EOR.
  • To correlate structural changes with catalytic performance enhancement.
  • To elucidate the mechanisms behind improved EOR activity.

Main Methods:

  • Electrochemical cycling of HEA nanocubes.
  • High-resolution transmission electron microscopy (HRTEM).
  • Synchrotron-based X-ray absorption spectroscopy (XAS).
  • In situ surface-enhanced infrared absorption spectroscopy (SEIRAS).
  • Electrochemical stripping experiments.
  • Computational modeling.

Main Results:

  • Catalyst activity increased 8.3-fold due to facet structural evolution.
  • Cubic morphology transformed to a beveled shape with {100}, {110}, and {111} facets.
  • Compositional homogeneity and high-entropy nature were maintained.
  • Enhanced C─C bond cleavage and improved resistance to formate poisoning were observed.

Conclusions:

  • Structural evolution of HEA nanocatalysts significantly enhances EOR performance.
  • The transformed facets facilitate complete ethanol oxidation to CO2.
  • These findings offer insights for designing efficient catalysts for renewable energy applications.