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

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

6.0K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
6.0K
Sulfur Assimilation01:20

Sulfur Assimilation

509
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to...
509
Electrophilic Aromatic Substitution: Sulfonation of Benzene01:22

Electrophilic Aromatic Substitution: Sulfonation of Benzene

9.2K
Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
9.2K
Microbes and the Sulfur Cycle01:29

Microbes and the Sulfur Cycle

59
Sulfur is a vital element in Earth's biogeochemical systems. It transitions through various inorganic states, including sulfate (SO₄²⁻), elemental sulfur (S⁰), and sulfide (S²⁻). Abiotic and biological mechanisms across oxic and anoxic environments intricately mediate these transformations. Sulfate, the most oxidized form of sulfur, is predominantly stored in rocks, marine sediments, and oceanic waters, acting as a long-term reservoir in the global sulfur...
59
Catalysis02:50

Catalysis

32.4K
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.
32.4K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

4.0K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
4.0K

You might also read

Related Articles

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

Sort by
Same author

<i>In situ</i> generated dual oxyanions enable bifunctional synergy to overcome dehydrogenation limitations in HMF electrooxidation.

Chemical science·2026
Same author

Rational Molecular Design of a Multi-Electron Organic Anode via Rapid Microwave Synthesis for Ultrastable NH<sub>4</sub> <sup>+</sup> Storage.

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

Unlocking the Dynamic Reconstruction of Electrocatalysts: The Triggering Role of Fluoride in Enhancing OER Kinetics.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Enhancing oxygen evolution reaction performance <i>via</i> Zn/Fe co-doping in a Co<sub>3</sub>O<sub>4</sub> nanostructure: mechanistic insights and surface reconstruction dynamics.

Materials horizons·2025
Same author

Superconjugated Anthraquinone Carbonyl-Based Covalent Organic Framework as Anode Material for High-Performance Aqueous Ammonium-Ion Batteries.

Angewandte Chemie (International ed. in English)·2025
Same author

Co<sub>3</sub>O<sub>4</sub>/NiCo<sub>2</sub>O<sub>4</sub> heterojunction as oxygen evolution reaction catalyst for efficient luminol anode electrochemiluminescence.

Journal of colloid and interface science·2024

Related Experiment Video

Updated: Apr 9, 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

12.1K

Surface sulfidation toward highly active S/NiMoSe for superior alkaline hydrogen evolution.

Xinyu Li1, Huaiqing Yan1, Yue Xiao1

  • 1School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, 832003, China. wenguo@shzu.edu.cn.

Chemical Communications (Cambridge, England)
|April 8, 2026
PubMed
Summary

A novel electrocatalyst using S/NiMoSe hierarchical microspheres on nanofibers was developed for efficient alkaline hydrogen evolution. Surface sulfidation enhances activity and stability by altering water interactions and forming sulfate ions.

More Related Videos

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

4.4K
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

20.5K

Related Experiment Videos

Last Updated: Apr 9, 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

12.1K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

4.4K
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

20.5K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Developing efficient electrocatalysts for the hydrogen evolution reaction (HER) is crucial for clean energy technologies.
  • Alkaline HER electrocatalysts often face challenges with activity and long-term stability.

Purpose of the Study:

  • To synthesize and characterize a novel S/NiMoSe hierarchical microsphere-supported nanofiber electrocatalyst.
  • To investigate the mechanism behind the enhanced alkaline HER performance and stability.

Main Methods:

  • Surface sulfidation strategy was employed to synthesize the S/NiMoSe electrocatalyst.
  • Electrochemical measurements were conducted to evaluate the HER performance in alkaline media.
  • Surface analysis techniques were used to understand the structural and chemical changes upon sulfidation.

Main Results:

  • The synthesized S/NiMoSe electrocatalyst demonstrated excellent performance in the alkaline hydrogen evolution reaction.
  • Surface sulfidation was found to weaken interfacial water hydrogen-bonding.
  • Reconstruction of the catalyst surface generated sulfate ions (SO42-), contributing to sustained activity.

Conclusions:

  • The S/NiMoSe hierarchical microsphere-supported nanofiber electrocatalyst offers a promising pathway for efficient alkaline HER.
  • The surface sulfidation strategy effectively enhances both the activity and stability of the electrocatalyst.