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

Catalysis02:50

Catalysis

26.6K
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.
26.6K
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

218
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
218
Electrodeposition01:08

Electrodeposition

597
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...
597
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.3K
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.
2.3K

You might also read

Related Articles

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

Sort by
Same author

Manganese(II) Oxidation and Mineralization by the Deep-Sea Bacterium Shewanella piezotolerans WP3.

Geobiology·2026
Same author

Single-Cell Reveal GALNT7-Dependent Ferroptosis Suppression as a Mechanism of Immunotherapy Resistance in Non-Small Cell Lung Cancer.

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

Multimodal Nanobubbles Carrying Indocyanine Green and VCAM-1 Targeting Peptide for Molecular Imaging of DOX-Induced Cardiotoxicity.

International journal of nanomedicine·2026
Same author

Coordination orientation isomerism boosting concerted hydrogen peroxide photosynthesis.

Nature communications·2026
Same author

Engineering of Donor-Acceptor Nanodomains in Zn-Salen COFs Enhances Efficient Coupling Photoredox of Oxygen and Indoline.

Angewandte Chemie (International ed. in English)·2026
Same author

Removing Pb<sup>2+</sup> ions from aqueous solution with freshwater cyanobacteria: Combined adsorption and intracellular precipitation.

Journal of hazardous materials·2026

Related Experiment Video

Updated: Jun 5, 2025

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
15:08

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells

Published on: September 20, 2012

15.9K

Interface Electron Transfer Direction-Tuned Urea Electrooxidation Over Multi-Interface Nickel Sulfide

Xingyu Guo1, Yu Li1, Zhengrong Xu1

  • 1Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China.

Small (Weinheim an Der Bergstrasse, Germany)
|December 5, 2024
PubMed
Summary

Efficient hydrogen production via urea electrolysis is possible using novel NiS-based heterojunctions. Tuning electron transfer at interfaces enhances urea oxidation reaction (UOR) electrocatalyst performance.

Keywords:
Mott–Schottky heterojunctionOER side reactionelectrocatalystsheterogeneous interfacesurea oxidation reaction

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

18.1K
Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
10:01

Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase

Published on: December 4, 2017

12.2K

Related Experiment Videos

Last Updated: Jun 5, 2025

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
15:08

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells

Published on: September 20, 2012

15.9K
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

18.1K
Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
10:01

Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase

Published on: December 4, 2017

12.2K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Electrolyzing urea aqueous solutions offers a lower overpotential for hydrogen production compared to oxygen evolution reaction (OER).
  • Efficient and selective electrocatalysts are essential for the urea oxidation reaction (UOR).

Purpose of the Study:

  • To develop novel NiS-based heterojunctions as efficient electrocatalysts for UOR.
  • To investigate the effect of interfacial electron transfer direction on UOR performance.

Main Methods:

  • Synthesis of NiS/Ni3S2-Ni@NCNT and NiS/NiS2-Ni@NCNT heterojunctions.
  • Electrocatalytic testing of UOR in 1.0 m KOH with 0.5 m urea.
  • Experimental and theoretical calculations to analyze electronic structure and reaction mechanisms.

Main Results:

  • NiS/Ni3S2-Ni@NCNT demonstrated superior UOR performance, achieving 10 mA cm-2 at 1.37 V.
  • Electron transfer from Ni3S2 to NiS in NiS/Ni3S2 heterojunctions enhanced catalytic activity.
  • Mott-Schottky heterojunctions facilitated active NiOOH species formation and accelerated urea conversion.

Conclusions:

  • Interface electron transfer direction is a critical factor in tuning UOR electrocatalyst performance.
  • NiS/Ni3S2-Ni@NCNT heterojunctions show significant promise for efficient hydrogen production via urea electrolysis.